You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-(4-chloro-2-methylphenyl)-2,2-dimethyl-N'-[4-(trifluoromethyl)phenyl]propanediamide is given. What is its corresponding molecular formula?
user
C19H18ClF3N2O2
assistant