You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(1S,4S)-2,5-diazabicyclo[2.2.1]heptan-2-yl]-(3,4,7-trimethyl-1H-indol-2-yl)methanone into molecular formula.
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C17H21N3O
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