You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S,5R)-5-(aminomethyl)-N-[3-methyl-1-[3-(trifluoromethyl)phenyl]butyl]oxolane-2-carboxamide;hydrochloride by IUPAC nomenclature, provide its molecular formula.
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C18H26ClF3N2O2
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