InChI=1S/C27H24N4O3/c1-26(2)11-12-30-20(13-16-15-7-3-5-9-18(15)28-22(16)26)24(33)31-21(23(30)32)14-27(34)17-8-4-6-10-19(17)29-25(27)31/h3-13,21,25,28-29,34H,14H2,1-2H3/b12-11-,20-13-/t21-,25+,27-/m1/s1