InChI=1S/C20H24N2O3/c1-3-12-13-6-8-22-9-7-20(18(12)22)14-5-4-11(23)10-15(14)21-17(20)16(13)19(24)25-2/h4-5,10,12-13,18,21,23H,3,6-9H2,1-2H3