N-[(5-2-[(6S)-2-amino-4-oxo-3,4,5,6,7,8-hexahydropyrido[2,3-d]pyrimidin-6-yl]ethyl-4-methylthiofen-2-yl)karbonyl]-L-glutamová kyselina
N-5-[2-((6S)-2-amino-4-oxo-3,4,5,6,7,8-hexahydropyrido[2,3-d]pyrimidin-6-yl)ethyl]-4-methylthiophene-2-carbonyl-L-glutamic acid