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-oxazol-2-yl)methyl]-2-methyl-3-[(4-phenylcyclohexyl)methyl]guanidine .
user
C21H30N4O
assistant