InChI=1S/C15H22O6S/c1-8(2)10-7-15(4)9(3)12(16)6-13(17)11(15)5-14(10)21-22(18,19)20/h5,9-10,13-14,17H,1,6-7H2,2-4H3,(H,18,19,20)/t9?,10?,13?,14?,15-/m1/s1