You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name ethyl 2-[6-[[(2S)-3-cyclopentyl-2-[4-(trifluoromethyl)imidazol-1-yl]propanoyl]amino]pyridin-3-yl]-2-oxoacetate into its molecular formula.
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C21H23F3N4O4
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