You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(1R)-1-[(2-bromophenyl)carbamothioylamino]-2,2,2-trichloroethyl]-3-methylbutanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H17BrCl3N3OS
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