You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(3-methoxy-4-methylphenyl)ethyl]-2-methyl-3-[[4-(1-phenylethylamino)oxan-4-yl]methyl]guanidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H38N4O2
assistant