InChI=1S/C15H22O7S/c1-7-6-21-12-4-9-11(17)5-10(16)8(2)15(9,3)14(13(7)12)22-23(18,19)20/h6,8-11,14,16-17H,4-5H2,1-3H3,(H,18,19,20)