You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methyl-3-[methyl-[[4-[(3-propan-2-yl-1,2,4-oxadiazol-5-yl)methyl]phenyl]carbamoyl]amino]propanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H24N4O4
assistant