You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2,3-dihydro-1H-inden-1-yl-[4-(1H-imidazol-2-ylmethyl)-1,4-diazepan-1-yl]methanone into molecular formula.
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C19H24N4O
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