You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 1-[[2-(dimethylamino)pyridin-4-yl]methyl]-3-ethyl-2-[(4-fluoro-3-methylphenyl)methyl]guanidine;hydroiodide ?
user
C19H27FIN5
assistant