InChI=1/C28H24N2O3/c1-31-25-11-3-21(4-12-25)19-29-23-7-15-27(16-8-23)33-28-17-9-24(10-18-28)30-20-22-5-13-26(32-2)14-6-22/h3-20H,1-2H3 0C0309DFA60CE53C