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 methyl 2-[(4-bromo-2-methylphenyl)carbamothioylamino]-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate .
user
C19H21BrN2O2S2
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