You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,2S,3R,5R,7R)-3-(3,4-dichlorophenyl)-N-methoxy-7-(methoxymethoxy)-N,8-dimethyl-8-azabicyclo[3.2.1]octane-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H26Cl2N2O4
assistant