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