You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[3-bromo-4-[(2,6-dichlorophenyl)methoxy]-5-ethoxyphenyl]methylamino]-3-pyridin-4-yl-1H-1,2,4-triazole-5-thione is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H20BrCl2N5O2S
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