InChI=1/C28H29NO2/c1-20(2)29(19-25-12-8-11-23-17-18-28(3,4)31-26(23)25)27(30)24-15-13-22(14-16-24)21-9-6-5-7-10-21/h5-18,20H,19H2,1-4H3 EDBE872BF17E4F27