InChI=1S/C15H23N3O4/c1-10-8-18(15(21)16-14(10)20)13-7-11(19)12(22-13)9-17-5-3-2-4-6-17/h8,11-13,19H,2-7,9H2,1H3,(H,16,20,21)/t11-,12+,13+/m0/s1