You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R)-1-[[(1S)-1-(2,4-dichlorophenyl)ethyl]amino]-1-oxopropan-2-yl] 2-chlorobenzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H16Cl3NO3
assistant