InChI=1S/C19H24N2O4/c1-12(2-3-13-4-7-15(22)8-5-13)21-11-18(24)14-6-9-17(23)16(10-14)19(20)25/h4-10,12,18,21-24H,2-3,11H2,1H3,(H2,20,25)