You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 6-oxo-1,7,8,8a,9,12,12a,12b-octahydro-[1,4]thiazino[3,4-a][2]benzazepine-4-carboxylic acid .
user
C14H17NO3S
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