You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[1-[N-[[2-(dimethylamino)quinolin-4-yl]methyl]-N'-methylcarbamimidoyl]piperidin-3-yl]acetamide into its molecular formula.
user
C21H30N6O
assistant