(2R-trans)-4-(1-(3,5- bis(trifluoromethyl)benzoyl)-2-(phenylmethyl)-4-piperidinyl)-N-(2,6-dimethylphenyl)-1-acetamide (S) hydroxybutanedioate
(2r-trans)-4-(1-(3,5- bis(trifluoromethyl)benzoyl)-2-(phenylmethyl)-4-piperidinyl)-n-(2,6-dimethylphenyl)-1-acetamide (s) hydroxybutanedioate