82144-24-9 Aspartic acid, N-(N-(p-(((2,4-diamino-6-pteridinyl)methyl)methylamino)benzoyl)-3-phenyl-L-alanyl)-, L- L-Aspartic acid, N-(N-(4-(((2,4-diamino-6-pteridinyl)methyl)methylamino)benzoyl)-L-phenylalanyl)- N-(N-(4-(((2,4-Diamino-6-pteridinyl)methyl)methylamino)benzoyl)-L-phenylalanyl)-L-aspartic acid