InChI=1S/C20H24N2O3/c1-3-20(24)12-22-9-7-13(20)10-18(22)19(23)15-6-8-21-17-5-4-14(25-2)11-16(15)17/h3-6,8,11,13,18-19,23-24H,1,7,9-10,12H2,2H3/t13-,18-,19+,20+/m0/s1