You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2-methoxyphenyl)methyl]-N-[(6-methylpyridin-2-yl)methyl]-1-[(2R)-oxolan-2-yl]methanamine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H26N2O2
assistant