43040-63-7 6,11-Dihydrodibenzo(b,e)thiepin-2-acetic acid 5-oxide 6H,11H-Dibenzo(b,e)thiepin-2-ylacetic acid 5-oxide BRN 1387152 Dibenzo(b,e)thiepin-2-acetic acid, 6,11-dihydro-, 5-oxide