InChI=1S/C19H22N2O4/c1-10(22)8-14(23)21-18(25)16-12(19(21,2)3)9-11-6-5-7-13(20-4)15(11)17(16)24/h5-7,12,16,20H,8-9H2,1-4H3/t12-,16-/m1/s1