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 (4R,5R)-5-(4-bromothiophen-2-yl)-1-[3-chloro-4-[(3R,5S)-3,5-dimethylpiperidin-1-yl]phenyl]-4-pyridin-2-ylimidazolidine-2-thione .
user
C25H26BrClN4S2
assistant