InChI=1S/C22H30O10S/c1-8-12(4)21(25)30-15(10-9-11(2)3)13(5)16-17(32-33(26,27)28)19(24)22(7)20(31-22)18(16)29-14(6)23/h8-9,15-18,20H,5,10H2,1-4,6-7H3,(H,26,27,28)/b12-8-