You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,2R)-2-[[(1R)-1-(3,4-dichlorophenyl)-3-methoxy-3-oxopropyl]carbamoyl]cyclohexane-1-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H20Cl2NO5-
assistant