You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (E)-N-[2-[4,6-dimethoxy-2-(4-methylpiperazin-1-yl)pyrimidin-5-yl]sulfanylpyrimidin-4-yl]-3-thiophen-2-ylprop-2-enamide ?
user
C22H25N7O3S2
assistant