You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-[7'-[5-chloro-6-(difluoromethoxy)pyridin-3-yl]-6'-oxospiro[cyclopropane-1,5'-pyrrolo[3,2-f][1,2]benzoxazole]-3'-yl]cyclopropanesulfonamide is given. What is its corresponding molecular formula?
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C20H15ClF2N4O5S
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