2-amino-2-(3-hydroxy-5-methyl-4-isoxazolyl)acetic acid
2-amino-2-(3-hydroxy-5-methyl-4-isoxazolyl)acetic acid ??
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2-amino-2-(3-hydroxy-5-methyl-4-isoxazolyl)acetic acid ?? ?? ? ???
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2-amino-2-(3-hydroxy-5-methyl-4-isoxazolyl)acetic acid ?? ??
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