29701-38-0 39555-44-7 54429-91-3 57361-59-8 L-Glutamic acid, N-(N-(N-(N-(4-(((2-amino-1,4-dihydro-4-oxo-6-pteridinyl)methyl)amino)benzoyl)-L-gamma-glutamyl)-L-gamma-glutamyl)-L-gamma-glutamyl)- Pteglu3 Triglutamate folate