2-phenyl-1-benzothiophene 1,1-dioxide InChI=1/C14H10O2S/c15-17(16)13-9-5-4-8-12(13)10-14(17)11-6-2-1-3-7-11/h1-10 benzo[b]thiophene, 2-phenyl-, 1,1-dioxide