InChI=1/C18H24N2O3/c1-5-15-16(10-14-8-12(3)7-13(4)9-14)20(11-23-6-2)18(22)19-17(15)21/h7-9H,5-6,10-11H2,1-4H3,(H,19,21,22)/f/h19H A5F3BFAED6B6E7B6