8-Trifluoromethyl-6-(1-methyl-4-piperidyl)-6H-dibenz(b,e)-1,4-oxathiepin hydrogen oxalate 83986-20-3 Piperidine, 1-methyl-4-(2-(trifluoromethyl)-11H-dibenz(b,e)(1,4)oxathiepin-11-yl)-, ethanedioate (1:1)