You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1R,2R,4R)-2-(cyclopropanecarbonylamino)-N-(2-methoxyethyl)-N-methyl-4-(phenoxymethyl)cyclopentane-1-carboxamide into its molecular formula.
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C21H30N2O4
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