InChI=1S/C19H24N2O3/c1-3-14-11-8-17-19(9-15(20-14)12(11)10-24-17)13-6-4-5-7-16(13)21(23-2)18(19)22/h4-7,11-12,14-15,17,20H,3,8-10H2,1-2H3/t11-,12+,14-,15+,17-,19+/m1/s1