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-[formyl(methyl)amino]-N-[(2R,3R)-2-methyl-1-azabicyclo[2.2.2]octan-3-yl]thieno[3,2-c]pyridine-6-carboxamide .
user
C18H22N4O2S
assistant