41432-72-8

(2S)-2-[[(4S)-4-[[(4S)-4-[[(4S)-4-[[(4S)-4-[[4-[(2-amino-4-oxo-1H-pteridin-6-yl)methyl-formyl-amino]benzoyl]amino]-4-carboxy-butanoyl]amino]-4-carboxy-butanoyl]amino]-4-carboxy-butanoyl]amino]-4-carboxy-butanoyl]amino]pentanedioic acid