You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 3-[[2-[2-(cyclohexen-1-yl)ethylamino]-2-oxoethyl]amino]-4-propan-2-yloxybenzoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H30N2O4
assistant