InChI=1/C27H22N4O7/c1-33-16-8-6-14(7-9-16)23-22-21(17(13-28)25(29)38-26(22)31-30-23)15-11-19(34-2)24(20(12-15)35-3)37-27(32)18-5-4-10-36-18/h4-12,21H,29H2,1-3H3,(H,30,31)/t21-/m1/s1/f/h31H E3C9E826DC3B09C1