3-oxazolidinecarboxylic acid, 2,5-dioxo-, methyl ester DL-OXAZOLIDINE,2,5-DIONE,3-METHOXYCARBONYL InChI=1/C5H5NO5/c1-10-4(8)6-2-3(7)11-5(6)9/h2H2,1H methyl 2,5-dioxo-1,3-oxazolidine-3-carboxylate