(2R,3S)-1-(Benzylamino)-4-pentene-2,3-diol
(2R,3S)-1-(Benzylamino)-4-pentene-2,3-diol ??
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(2R,3S)-1-(Benzylamino)-4-pentene-2,3-diol ?? ?? ? ???
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(2R,3S)-1-(Benzylamino)-4-pentene-2,3-diol ?? ??
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