1-(4-Cyclopentylphenyl)-4-(2-hydroxybutyl)piperazine maleate 1-Piperazineethanol, 4-(4-cyclopentylphenyl)-alpha-ethyl-, (Z)-2-butenedioate 113682-08-9 4-(4-Cyclopentylphenyl)-alpha-ethyl-1-piperazineethanol maleate