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 N-[4,5-dimethyl-3-[(4-methylpiperazin-1-yl)-pyridin-3-ylmethyl]thiophen-2-yl]thiophene-2-carboxamide .
user
C22H26N4OS2
assistant