1-(4-(Dimethylaminosulfonyl)phenacyl)-4-phenylpiperazine maleate 58722-49-9 Benzenesulfonamide, N,N-dimethyl-4-((4-phenyl-1-piperazinyl)acetyl)-, (Z)-2-butenedioate (1:1) N,N-Dimethyl-4-((4-phenyl-1-piperazinyl)acetyl)benzenesulfonamide maleate