You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (4S,5R)-5-(1-cyclopropyl-2,5-dimethylpyrrol-3-yl)-1-[2-(dimethylamino)ethyl]-4-pyridin-2-ylimidazolidine-2-thione ?
user
C21H29N5S
assistant