(R)-3-tert-Butoxycarbonylamino-4-cyclohexylbutyric
(R)-3-tert-Butoxycarbonylamino-4-cyclohexylbutyric ??
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(R)-3-tert-Butoxycarbonylamino-4-cyclohexylbutyric C??? ??, ??, ??
(R)-3-tert-Butoxycarbonylamino-4-cyclohexylbutyric ?? ?? ? ???
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(R)-3-tert-Butoxycarbonylamino-4-cyclohexylbutyric ?? ??
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