InChI=1S/C15H22O7S/c1-13(8-22-23(19,20)21)4-9-3-10(7-16)15(18)12(17)6-14(15,2)11(9)5-13/h3,7,9,11-12,17-18H,4-6,8H2,1-2H3,(H,19,20,21)