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 5-cyclohexyl-3-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-ylmethyl)-5-methylimidazolidine-2,4-dione ?
user
C18H25N3O2S
assistant