You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6-cyclopropyl-2-[[(2R)-2-phenylazetidin-1-yl]methyl]-4-(trifluoromethyl)pyridazin-3-one into molecular formula.
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C18H18F3N3O
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