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