methyl 8-ethyl-5,6,7,8-tetrahydro-2-methoxy-5-oxopyrido[2,3-d]pyrimidine-6-carboxylate

8-Ethyl-5,6,7,8-tetrahydro-2-methoxy-5-oxopyrido[2,3-d]pyrimidine-6-carboxylic acid methyl ester