10-Formylfolate tetraglutamate 10-Formylpteroylpentaglutamate 41432-72-8 L-Glutamic acid, N-(N-(N-(N-(N-(4-(((2-amino-1,4-dihydro-4-oxo-6-pteridinyl)methyl)formylamino)benzoyl)-L-gamma-glutamyl)-L-gamma-glutamyl)-L-gamma-glutamyl)-L-gamma-glutamyl)-