InChI=1S/C23H28N2O3/c26-22(11-12-23(27)28)25(20-9-5-2-6-10-20)21-14-17-24(18-15-21)16-13-19-7-3-1-4-8-19/h1-10,21H,11-18H2,(H,27,28)