1-Piperidineethanol, alpha-(6,7,8,9-tetrahydro-5H-benzocyclohepten-2-yl)-, (Z)-2-butenedioate (1:1) (salt) 42882-63-3 alpha-(6,7,8,9-Tetrahydro-5H-benzocyclohepten-2-yl)-1-piperidineethanol maleate