You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1R,3S)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropyl]-[4-(2-pyridin-2-ylethyl)piperazin-1-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H25Cl2N3O
assistant