You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-ethenyl-N-[[3-[[ethyl(methyl)amino]methyl]-1-methoxy-3-methylcyclohexyl]methyl]-5-methylpyridin-2-amine into its molecular formula.
user
C21H35N3O
assistant