You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-(6-chloro-2-imidazol-1-ylpyrimidin-4-yl)-4-(3-methylbutanoyl)piperazin-2-yl]-N-(2,3-dihydro-1,4-benzodioxin-5-ylmethyl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H32ClN7O4
assistant