InChI=1/C27H21N3O4/c31-24-14-29(17-6-2-1-3-7-17)27(32)21-13-19-18-8-4-5-9-20(18)28-25(19)26(30(21)24)16-10-11-22-23(12-16)34-15-33-22/h1-12,21,26,28H,13-15H2/t21-,26-/m1/s1 3A0FD21DB44FFD54