tert-butyl 3-[(4-fluorophenyl)methyl]-4-oxo-3H,4H,5H,6H,7H,8H-pyrido[4,3-d]pyrimidine-6-carboxylatetert-butyl 3-[(4-fluorophenyl)methyl]-4-oxo-3H,4H,5H,6H,7H,8H-pyrido[4,3-d]pyrimidine-6-carboxylate
