130820-45-0 N-Phenyl-N-(1-(2-phenylethyl)-4-piperidinyl)propanethioamide (E)-2-butenedioate (1:1) Propanethioamide, N-phenyl-N-(1-(2-phenylethyl)-4-piperidinyl)-, (E)-2-butenedioate (1:1)