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?? ???? >2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methyl-amino]benzoyl]amino]-4- phosphono-butanoic acid
2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methyl-amino]benzoyl]amino]-4- phosphono-butanoic acid
2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methyl-amino]benzoyl]amino]-4- phosphono-butanoic acid ??
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2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methyl-amino]benzoyl]amino]-4- phosphono-butanoic acid C??? ??, ??, ??
2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methyl-amino]benzoyl]amino]-4- phosphono-butanoic acid ?? ?? ? ???
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2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methyl-amino]benzoyl]amino]-4- phosphono-butanoic acid ?? ??
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