InChI=1S/C15H14O9S/c16-9-2-1-7(5-14(9)24-25(20,21)22)15-12(19)4-8-3-10(17)11(18)6-13(8)23-15/h1-3,5-6,12,15-19H,4H2,(H,20,21,22)