You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-(4-fluorophenyl)piperazin-1-yl]-[1-[2-(furan-2-yl)-2-hydroxyethyl]triazol-4-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H20FN5O3
assistant