8-Methoxy-6-(1-methyl-4-piperidyl)-6H-dibenz(b,e)-1,4-oxathiepin hydrogen maleate 83986-16-7 Piperidine, 4-(2-methoxy-11H-dibenz(b,e)(1,4)oxathiepin-11-yl)-1-methyl-, (Z)-2-butenedioate (1:1)