You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2,5-difluorophenyl)-2-(5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-7-yl)guanidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C14H15F2N5
assistant