InChI=1S/C21H24O15S/c22-7-12-18(36-37(32,33)34)16(28)17(29)20(35-12)21(31)13(25)6-11(24)15(19(21)30)10(5-14(26)27)8-1-3-9(23)4-2-8/h1-4,6,10,12,16-18,20,22-24,28-31H,5,7H2,(H,26,27)(H,32,33,34)