You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name (9R)-13-amino-9-ethyl-3-methyl-3,4,7,15-tetrazatricyclo[12.3.1.02,6]octadeca-1(18),2(6),4,14,16-pentaen-8-one into its molecular formula.
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C17H23N5O
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