You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-cyclohexyl-3-[[N'-[(4,5-dimethyl-1,3-oxazol-2-yl)methyl]-N-ethylcarbamimidoyl]amino]propanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H31N5O2
assistant