InChI=1S/C15H22O6S/c1-9(2)10-4-5-11-13(16)6-14(17)12(15(11,3)7-10)8-21-22(18,19)20/h5,10,12-13,16H,1,4,6-8H2,2-3H3,(H,18,19,20)/t10?,12?,13?,15-/m0/s1