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 2-[3-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)-3-oxopropyl]-1-[(4-ethoxyphenyl)methyl]-3-ethyl-1-methylguanidine .
user
C23H32N4O2S
assistant