InChI=1S/C15H22O8S/c1-7-3-4-10-13(12-8(2)11(16)5-9(7)12)23-14(17)15(10,18)6-22-24(19,20)21/h8-13,16,18H,1,3-6H2,2H3,(H,19,20,21)