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-[1-(2-imidazol-1-ylpyrimidin-4-yl)piperidin-2-yl]-N-[(4-sulfamoylphenyl)methyl]acetamide .
user
C21H25N7O3S
assistant