InChI=1S/C17H20O10S/c1-8(26-28(21,22)23)4-9-5-14(19)24-12-7-11(18)10-6-13(17(2,3)27-20)25-16(10)15(9)12/h5,7-8,13,18,20H,4,6H2,1-3H3,(H,21,22,23)