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 2-[[(1R)-2,3-dihydro-1H-inden-1-yl]-methylamino]-1-[4-(2-fluorophenyl)piperazin-1-yl]ethanone is given. What is its corresponding molecular formula?
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C22H26FN3O
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