InChI=1S/C21H18O14S/c22-12-5-10(33-21-18(26)16(24)17(25)19(34-21)20(27)28)6-13-14(12)15(23)11(7-32-13)8-1-3-9(4-2-8)35-36(29,30)31/h1-7,16-19,21-22,24-26H,(H,27,28)(H,29,30,31)/p-1/t16-,17-,18+,19-,21+/m0/s1