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 4-methoxy-N-[2-(4-methoxyphenyl)-2-pyrrolidin-1-ylethyl]piperidine-4-carboxamide;dihydrochloride ?
user
C20H33Cl2N3O3
assistant