You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 4-[[6-bromo-2-[(4-fluorophenyl)methoxy]-3-methoxyphenyl]methylamino]-3-methyl-1H-1,2,4-triazole-5-thione into molecular formula.
user
C18H18BrFN4O2S
assistant