You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (2S)-2-amino-3-(1H-indol-3-yl)-N-[3-(trifluoromethyl)cyclohexyl]propanamide;hydrochloride is given. What is its corresponding molecular formula?
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C18H23ClF3N3O
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