You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (1R,9S,13R)-4-bromo-N-(4-chlorophenyl)-9-methyl-10-(3-methylphenyl)-11-sulfanylidene-8-oxa-10,12-diazatricyclo[7.3.1.02,7]trideca-2(7),3,5-triene-13-carboxamide into molecular formula.
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C25H21BrClN3O2S
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