You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance methyl 6-tert-butyl-2-(2,2-dimethylpropyl)-5,7-dihydro-4H-thieno[2,3-c]pyridine-3-carboxylate .
user
C18H29NO2S
assistant