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