You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[[2-(3,4-dimethoxyphenyl)ethylamino]-(2-phenylethylamino)methylidene]amino]-N,N-dimethylacetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H32N4O3
assistant