You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 2-(1-butan-2-yl-4,6,6-trimethyl-3-oxo-1,4-diazepan-2-yl)acetonitrile is given. What is its corresponding molecular formula?
user
C14H25N3O
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