You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(3,4-dimethoxypyridin-2-yl)methyl]-N-[(5-methylthiophen-2-yl)methyl]cyclopropanamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H22N2O2S
assistant