(3.5) What's a good CR for this golem?

[Guy in a Gimp Suit]

Hedonism Golem
Large Construct
HD: 21d10+30 (165 HP)
Initiative: -1
Speed: 20 ft (4 squares)
AC: 29 (-1 size, -1 dexterity, +21 Natural)
Base Attack/Grapple: +15/+37
Attack: Slam +34 Melee (2d10+28 plus poison)
Full Attack: Slam +34 Melee (2d10+28 plus poison)
Space/Reach: 10 ft/10 ft
Special Attacks: Breath Weapon, Alcohol Poisoning
Special Qualities: Immunity to magic, Construct traits, Low-light Vision, Darkvision 60 feet, low-light vision, DR 10/Adamantine
Saves: Fort +7, Ref +6, Will +7
Abilities: STR 46, DEX 9, CON -, INT -, WIS 11, CHA 1
Skills: -
Feats: -
Environment: Any
Organization: Solitary or Gang (2-4)
Challenge Rating:
Treasure: None
Alignment: Always Neutral
Advancement:

This amber-colored automaton stands twice as tall as an ogre and resembles a man made of polished gold. A brightly phosphorescent, purple liquid seems to come out of its pores.


___
Breath Weapon (Su): A Hedonism Golem has one type of breath weapon: A 40 ft cone of Mordayn vapors (Book of Vile Darkness page 42-43). Creatures caught within the cone must make a DC 20 Fortitude save or suffer the effects of the drug.

Alcohol Poisoning (Ex): A Hedonism Golem's body is so suffused with drugs and alcohol that its blows can heavily inebriate a foe. Slam; DC 20. Initial Damage 1d4 points of dexterity and wisdom. Secondary Damage 1d4 points of wisdom and dexterity damage.

Immunity to Magic (Ex): A hedonism golem is immune to any spell or spell-like ability that offers spell resistance. In addition, certain spells and effects function differently against the creature, as noted below:

A delay poison spell slows the hedonism golem (as the spell slow) for 3 rounds with no saving throw.

An effect that deals acid damage breaks any slow effect on the golem and heals 1 point of damage for every 3 points of damage it would otherwise deal. If the amount of healing would cause the hedonism golem to exceed its full normal hit points, it gains the excess as temporary hit points. A hedonism golem gets no saving throw against these effects.

A hedonism golem is affected normally by fire effects such as fireball  

[Ryssa Blackblood]

Well let's see.... 21 HD + Construct stuff + poison + Breath attack + DR

I'd say a CR 25 would be fair  

[Raganui Minamoto]

That is all.