1-Piperazineethanol, 4-(10,11-dihydro-6-fluorodibenzo(b,f)thiepin-10-yl)-, (Z)-2-butenedioate 4-(10,11-Dihydro-6-fluorodibenzo(b,f)thiepin-10-yl)-1-piperazineethanol maleate 73129-41-6 VUFB-12490