You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(6aR,9S)-4,7-dimethyl-5,5a,6,6a,8,9-hexahydroindolo[4,3-fg]quinolin-9-yl]methanamine into molecular formula.
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C17H23N3
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