for the following products
4-(N-((2-Amino-4-oxo-3,4-dihydropteridin-6-yl)methyl)-2,2,2-trifluoroacetamido)benzoic acid | 4-[[(2-Amino-3,4-dihydro-4-oxo-6-pteridinyl)methyl](2,2,2-trifluoroacetyl)amino]-benzoic acid and N10-(Trifluoroacetyl)pteroic acid
