You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2,3,4a,5,6,7,8,8a-octahydrobenzo[b][1,4]oxazin-4-yl-(2-amino-2-methylcyclohexyl)methanone into molecular formula.
user
C16H28N2O2
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