You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-(3-chloro-4-methoxyanilino)-2-oxoethyl]-[(1R)-1-(2,4-dichlorophenyl)ethyl]azanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H18Cl3N2O2+
assistant