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 1-[[5-(2-bromophenyl)-4-(3,4-dichlorophenyl)-1,2,4-triazol-3-yl]sulfanyl]-3,3-dimethylbutan-2-one .
user
C20H18BrCl2N3OS
assistant