InChI=1S/C17H18O10S/c1-17(2)16-15(26-27-17)13-9(18)7-10-12(14(13)25-16)8(6-11(19)24-10)4-3-5-23-28(20,21)22/h6-7,15-16,18H,3-5H2,1-2H3,(H,20,21,22)