InChI=1S/C17H22N2O4/c1-11(2)7-8-23-13-5-3-12(4-6-13)9-14-16(21)19-15(10-20)17(22)18-14/h3-7,14-15,20H,8-10H2,1-2H3,(H,18,22)(H,19,21)/t14-,15-/m0/s1