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-[(2-methoxyphenyl)methyl]-2-methyl-3-[(4-methyl-2-phenyl-1,3-thiazol-5-yl)methyl]guanidine .
user
C21H24N4OS
assistant