InChI=1S/C15H14O10S/c16-8-5-11(19)13(12(20)6-8)9(17)3-1-7-2-4-10(18)15(14(7)21)25-26(22,23)24/h2,4-6,16,18-21H,1,3H2,(H,22,23,24)