5H-isoxazolo[2,3-a]pyrazine-5-acetic acid, hexahydro-4-oxo-2-(4-pyridinyl)-, methyl ester InChI=1/C14H17N3O4/c1-20-13(18)9-16-6-7-17-11(14(16)19)8-12(21-17)10-2-4-15-5-3-10/h2-5,11-12H,6-9H2,1H methyl (4-oxo-2-pyridin-4-ylhexahydro-5H-isoxazolo[2,3-a]pyrazin-5-yl)acetate