You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (4-fluorophenyl) N-[(3S)-4-(3-chloro-4-fluorophenyl)-2,3-dihydro-1H-pyrrol-3-yl]-N-methylcarbamate into molecular formula.
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C18H15ClF2N2O2
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