You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[[3-(3-bromophenyl)-1,2,4-oxadiazol-5-yl]methylsulfanyl]-N-cyclohexylpropanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H22BrN3O2S
assistant