You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule N,1,2-trimethyl-6-[2-(1-methylimidazol-2-yl)thieno[3,2-b]pyridin-7-yl]oxyindole-3-carboxamide ?
user
C23H21N5O2S
assistant