You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 2-(2,4-difluorophenyl)-5-methyl-3-(oxolan-2-ylmethyl)imidazolidin-4-one is given. What is its corresponding molecular formula?
user
C15H18F2N2O2
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