You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[chloro(phenyl)methyl]-2-ethyl-2-(hydroxymethyl)-1-(1,2,4-triazol-1-ylmethyl)cyclopentan-1-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H24ClN3O2
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