InChI=1S/C17H18O10S/c1-25-14-5-9(6-15(26-2)17(14)27-28(22,23)24)3-4-11(19)16-12(20)7-10(18)8-13(16)21/h5-8,18,20-21H,3-4H2,1-2H3,(H,22,23,24)