You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (E)-3-(2-chloro-6-fluorophenyl)-1-[4-(2-fluorophenyl)piperazin-1-yl]prop-2-en-1-one using the IUPAC nomenclature.
user
C19H17ClF2N2O
assistant