InChI=1/C15H22N2O3/c1-11-12(13(18)17-9-3-2-4-10-17)15(20-14(11)19)5-7-16-8-6-15/h16H,2-10H2,1H3/p+1/fC15H23N2O3/h16H/q+1 3BE3BA9442DA11D3