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 1-(2,1,3-benzothiadiazol-5-yl)-N-[[3-(2,3-dihydro-1,4-benzodioxin-6-yl)-1-methylpyrazol-4-yl]methyl]-N-methylmethanamine .
user
C21H21N5O2S
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