You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-methyl-5-[[4-[(3-methyl-1,2-oxazol-5-yl)methyl]-1,4-diazepan-1-yl]methyl]-1,2-oxazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H22N4O2
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