You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1R)-1-(3-chlorophenyl)ethyl]-[(2S)-1-[[2-(2,6-dimethylanilino)-2-oxoethyl]amino]-1-oxopropan-2-yl]azanium The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H27ClN3O2+
assistant