InChI=1S/C21H26N2O3/c1-26-20(25)21-11-13(12-24)10-14-6-8-23(19(14)21)9-7-16-15-4-2-3-5-17(15)22-18(16)21/h2-5,13-14,19,22,24H,6-12H2,1H3/t13-,14+,19+,21-/m1/s1