InChI=1S/C14H14O9S/c1-14(6-15)13(23-24(18,19)20)11(17)10-8(22-14)4-2-7-3-5-9(16)21-12(7)10/h2-5,11,13,15,17H,6H2,1H3,(H,18,19,20)