InChI=1S/C15H24O6S/c1-9(2)12-8-13(16)10(3)6-5-7-11(4)15(14(12)17)21-22(18,19)20/h7,9-10,12,15H,5-6,8H2,1-4H3,(H,18,19,20)/b11-7-