You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-[(4-fluoro-3-methylphenyl)methyl]-2-methyl-3-[(2-phenyl-1,3-oxazol-4-yl)methyl]guanidine;hydroiodide .
user
C20H22FIN4O
assistant