One of the skin-irritating components of poison oak is tetrahydrourushiol: The long, nonpolar hydrocarbon tail embeds itself in a person’s oily skin, where the molecule initiates an allergic response....

One of the skin-irritating components of poison oak is tetrahydrourushiol:

The long, nonpolar hydrocarbon tail embeds itself in a person’s oily skin, where the molecule initiates an allergic response. Scratching the itch spreads tetrahydrourushiol molecules over a larger surface area, causing the zone of irritation to grow. Is this compound an alcohol or a phenol? Defend your answer