InChI=1S/C15H22O7S/c1-12(2)5-9-4-10(7-16)15(18)11(22-23(19,20)21)6-13(15,3)14(9,17)8-12/h4,7,9,11,17-18H,5-6,8H2,1-3H3,(H,19,20,21)