You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by N-[1-amino-3-(3,4-dimethoxyphenyl)-1-oxopropan-2-yl]-1-(2,4-dichlorophenyl)cyclopropane-1-carboxamide ?
user
C21H22Cl2N2O4
assistant