InChI=1S/C16H26O7S/c1-13(2)5-9-10(6-13)14(3)7-15(14)12(21-4)22-8-16(15,17)11(9)23-24(18,19)20/h9-12,17H,5-8H2,1-4H3,(H,18,19,20)