InChI=1/C15H17N3O5/c1-22-12(19)11-6-5-10(23-11)9-16-18-13(20)15(17-14(18)21)7-3-2-4-8-15/h5-6,9H,2-4,7-8H2,1H3,(H,17,21)/b16-9+/f/h17H 20A6804E5A5F2D77