3,11-Dichloro-6,11-dihydro-6-methyl-5,5-dioxodibenzo[c,f][1,2]thiazepine3,11-Dichloro-6,11-dihydro-6-methyldibenzo[c,f][1,2]thiazepine 5,5-dioxide3,11-Dichloro-6,11-dihydro-6-methyl-5,5-dioxodibenzo[c,f][1,2]thiazepinerac 3,11-Dichloro-6,11-dihydro-6-methyl-dibenzo[c,f][1,2]thiazepine 5,5-Dioxide5,8-Dichloro-11-methyldibenzo[c,f]thiazepine 10,10-dioxide