You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-chloro-N-[2-oxo-1-(2,2,2-trifluoroethyl)piperidin-3-yl]-1H-indole-2-carboxamide into its molecular formula.
user
C16H15ClF3N3O2
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