You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(cyclohexen-1-yl)ethyl]-3-[6-(2,6-dimethylmorpholin-4-yl)pyridin-3-yl]urea is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H30N4O2
assistant