L-Glutamic acid, N-[4-[[(4S)-4-[[4-[[(2-amino-3,4-dihydro-4-oxo-6-pteridinyl)methyl]amino]benzoyl]amino]-4-carboxy-1-oxobutyl]amino]benzoyl]-
L-Glutamic acid, N-[4-[[(4S)-4-[[4-[[(2-amino-3,4-dihydro-4-oxo-6-pteridinyl)methyl]amino]benzoyl]amino]-4-carboxy-1-oxobutyl]amino]benzoyl]-