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 (2S)-6-bromo-4-(3-ethoxy-1-ethylpyrazol-4-yl)sulfonyl-2-methyl-2,3-dihydro-1,4-benzoxazine .
user
C16H20BrN3O4S
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