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 4-chloro-2-[[2-(2,3-dihydro-1H-inden-5-yloxy)acetyl]amino]-N-propan-2-ylbenzamide is given. What is its corresponding molecular formula?
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C21H23ClN2O3
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