You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 1-[(3R)-4-(cyclopropylmethyl)-5-oxo-3-propan-2-yl-1,4-diazepan-1-yl]butane-1,2-dione is given. What is its corresponding molecular formula?
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C16H26N2O3
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