InChI=1/C21H18N2O5S2/c1-14-6-8-16(9-7-14)30(26,27)23-11-18(17-4-2-3-5-19(17)23)21(25)10-15(12-29-13-22)28-20(21)24/h2-9,11,15,25H,10,12H2,1H3/t15-,21+/m1/s1 DBB86C72D3AA1D15