You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by pyridin-3-yl-[4-[[2-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-3-yl]methyl]piperazin-1-yl]methanone ?
user
C19H18F3N5O
assistant