InChI=1S/C27H24N2O3/c1-15(2)32-17-8-10-18-16(13-17)7-9-20-23(18)25-21(14-28-27(25)31)24-19-5-3-4-6-22(19)29(11-12-30)26(20)24/h3-6,8,10,13-15,30H,7,9,11-12H2,1-2H3