InChI=1/C28H27N3O2/c1-21-26(20-23-11-6-3-7-12-23)31(18-17-22-9-4-2-5-10-22)28(29-21)25-14-8-13-24(19-25)15-16-27(32)30-33/h2-16,19,33H,17-18,20H2,1H3,(H,30,32)/b16-15+/f/h30H C67AF9C968E4726F