10,11-Dihydro-8-methoxydibenzo(b,f)thiepin-1-carboxylic acid 2-Methoxy-9-carboxy-10,11-dihydrodibenzo(b,f)thiepin 61307-79-7 Dibenzo(b,f)thiepin-1-carboxylic acid, 10,11-dihydro-8-methoxy-