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-methoxy-5-[4-(6-methyl-2-pyrrolidin-1-ylpyrimidin-4-yl)piperazin-1-yl]sulfonylbenzamide .
user
C21H28N6O4S
assistant