1-(4-Methanesulfonylphenyl)-2-(4-p-tolylpiperazino)ethanol maleate 1-Piperazineethanol, 4-(4-methylphenyl)-alpha-(4-(methylsulfonyl)phenyl)-, (Z)-2-butenedioate (1:1) 4-(4-Methylphenyl)-alpha-(4-(methylsulfonyl)phenyl)-1-piperazineethanol maleate 56621-72-8