You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-(6,11-dihydro-5H-pyrrolo[2,1-c][1,4]benzodiazepine-6-carbonyl)phenyl]-2-(2-methylphenyl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H25N3O2
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