82144-27-2 Aspartic acid, N-(4-(((2,4-diamino-6-pteridinyl)methyl)methylamino)-2-methoxybenzoyl)-, L- L-Aspartic acid, N-(4-(((2,4-diamino-6-pteridinyl)methyl)methylamino)-2-methoxybenzoyl)- N-(4-(((2,4-Diamino-6-pteridinyl)methyl)methylamino)-2-methoxybenzoyl)-L-aspartic acid