InChI=1S/C19H24N2O4/c1-12(7-8-13-5-3-2-4-6-13)21-11-17(23)14-9-15(19(20)25)18(24)16(22)10-14/h2-6,9-10,12,17,21-24H,7-8,11H2,1H3,(H2,20,25)