InChI=1S/C20H26N2O3/c1-15-6-8-16(9-7-15)14-21-10-12-22(13-11-21)19(23)17-4-2-3-5-18(17)20(24)25/h2-3,6-9,17-18H,4-5,10-14H2,1H3,(H,24,25)