InChI=1/C21H22N4O4S/c1-15(26)23-10-12-24(13-11-23)21(27)9-7-16-6-8-20(18(14-16)25(28)29)30-19-5-3-2-4-17(19)22/h2-9,14H,10-13,22H2,1H3/b9-7+ 5AE1EDA676CBCB32