InChI=1S/C16H14O10S/c1-7-12(18)11(15(21)16(22)13(7)19)14(20)10(17)6-8-2-4-9(5-3-8)26-27(23,24)25/h2-5,18-19,21-22H,6H2,1H3,(H,23,24,25)