You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (4aR,6S,8aR)-N-[4-(2H-tetrazol-5-yloxy)phenyl]-3,4,4a,5,6,7,8,8a-octahydro-2H-benzo[b][1,4]oxazine-6-carboxamide;hydrochloride into its molecular formula.
user
C16H21ClN6O3
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