You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (Z)-2-[4-[(dimethylamino)methyl]-3,5-dimethoxyphenyl]-N-methyl-3-propan-2-ylidenehex-1-en-1-amine by IUPAC nomenclature, provide its molecular formula.
user
C21H34N2O2
assistant