You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-[[4-[(3-chloro-1H-pyrrolo[2,3-b]pyridin-4-yl)oxy]-3,5-difluorophenyl]carbamoylamino]-N,N-dimethylcyclopropane-1-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C20H18ClF2N5O3
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