You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-cyclohexyl-2-[4-[[(8-methyl-1,2,3,4,5,6-hexahydro-3-benzazocin-7-yl)amino]methyl]phenyl]ethanone;methanol is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H40N2O2
assistant