5,6-dimethoxy-1,3-dihydro-2-benzothiophene 2,2-dioxide InChI=1/C10H12O4S/c1-13-9-3-7-5-15(11,12)6-8(7)4-10(9)14-2/h3-4H,5-6H2,1-2H benzo[c]thiophene, 1,3-dihydro-5,6-dimethoxy-, 2,2-dioxide