InChI=1S/C22H28O9S/c1-6-16(31-32(27,28)29)14-10-17(24)30-22-18(14)20(25)13(8-7-11(2)3)21(26)19(22)15(23)9-12(4)5/h7,10,12,16,25-26H,6,8-9H2,1-5H3,(H,27,28,29)