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-[(3R)-1-azabicyclo[2.2.2]octan-3-yl]-7-[(3S)-3-methoxypyrrolidin-1-yl]-1,2-benzothiazole-3-carboxamide is given. What is its corresponding molecular formula?
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C20H26N4O2S
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