You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named tert-butyl (1S,5R,6S)-2-oxo-1-phenyl-8-(1-phenylethyl)-8-azabicyclo[3.2.1]oct-3-ene-6-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C26H29NO3
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