InChI=1S/C17H14O11S/c1-24-7-4-8-11(12-14(28-29(21,22)23)16(20)27-17(12)25-8)13-10(7)5-2-3-6(18)9(5)15(19)26-13/h4,12,14,16-17,20H,2-3H2,1H3,(H,21,22,23)