You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-(3-chloro-5,6-dihydrobenzo[b][1,4]benzoxazepine-6-carbonyl)-N-(pyridin-2-ylmethyl)pyridine-2-carboxamide into its molecular formula.
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C26H19ClN4O3
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