(R)-4-(3-Trifluoromethylbenzoylamino)-5-oxo-5-(8-azaspiro[4.5]decan-8-yl)valeric acid C??? ??, ??, ??

(R)-4-(3-Trifluoromethylbenzoylamino)-5-oxo-5-(8-azaspiro[4.5]decan-8-yl)valeric acid ?? ?? ? ???

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(R)-4-(3-Trifluoromethylbenzoylamino)-5-oxo-5-(8-azaspiro[4.5]decan-8-yl)valeric acid ?? ??