You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name ethyl N-[6-[2-[2-(4-methylpiperazin-1-yl)ethoxy]pyrimidin-5-yl]-4-pyrimidin-2-yl-1H-benzimidazol-2-yl]carbamate;methane into its molecular formula.
user
C26H33N9O3
assistant