2-(Benzylamino)-3-butenoic acid methyl ester
2-(Benzylamino)-3-butenoic acid methyl ester ??
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2-(Benzylamino)-3-butenoic acid methyl ester C??? ??, ??, ??
2-(Benzylamino)-3-butenoic acid methyl ester ?? ?? ? ???
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2-(Benzylamino)-3-butenoic acid methyl ester ?? ??
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