The molecule is a macromolecule consisting of 10-formyltetrahydrofolic acid with an arbitrary number of glutamate residues attached as a polypeptide to the single existent one. It derives from a 10-formyltetrahydrofolic acid.
(2S)-2-[[(4S)-4-[[(4S)-4-[[4-[[(6R)-2-amino-4-oxo-5,6,7,8-tetrahydro-3H-pteridin-6-yl]methyl-formylamino]benzoyl]amino]-4-carboxybutanoyl]amino]-4-carboxybutanoyl]amino]pentanedioic acid