InChI=1S/C21H20O14S/c22-7-16-18(26)19(27)20(28)21(34-16)33-14-3-8(1-2-10(14)23)13-6-12(25)17-11(24)4-9(5-15(17)32-13)35-36(29,30)31/h1-6,16,18-24,26-28H,7H2,(H,29,30,31)/t16-,18-,19-,20-,21-/m1/s1