You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule benzyl 1-(1H-imidazol-5-ylmethyl)-7-phenyl-3,5-dihydro-2H-1,4-benzodiazepine-4-carboxylate into molecular formula.
user
C27H26N4O2
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