1-(4-Cyclopentylphenyl)-2-(methyl(phenylmethyl)amino)ethanone hydrogen maleate 85689-87-8 ETHANONE, 1-(4-CYCLOPENTYLPHENYL)-2-(METHYL(PHENYLMETHYL)AMINO)-, (Z)-2-BUTENEDI Ethanone, 1-(4-cyclopentylphenyl)-2-(methyl(phenylmethyl)amino)-, (Z)-2-butenedioate (1:1)