You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-[(4,5-dimethyl-1,3-thiazol-2-yl)methyl]-3-[2-(6-fluoro-1H-indol-3-yl)ethyl]-2-methylguanidine .
user
C18H22FN5S
assistant