You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule tert-butyl N-[2-[7-[3-(4-isocyanoanilino)propyl]-9-oxa-3,7-diazabicyclo[3.3.1]nonan-3-yl]ethyl]carbamate into molecular formula.
user
C23H35N5O3
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