InChI=1S/C15H22O6S/c1-5-9-13-10(7(2)3)6-11(21-22(18,19)20)8(4)12(13)15(17)14(9)16/h5,7,10-13,15,17H,4,6H2,1-3H3,(H,18,19,20)/b9-5-