glutamic acid, N-[4-[[[2-amino-5-(aminocarbonyl)-5,6,7,8-tetrahydro-4-hydroxy-6-pteridinyl]methyl]amino]benzoyl]-;N-(4-{[(2-amino-5-carbamoyl-4-hydroxy-5,6,7,8-tetrahydropteridin-6-yl)methyl]amino}benzoyl)glutamic acid
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