You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-(iodoiodanuidylamino)-N-[4-(1,3-oxazol-5-yl)phenyl]-3-phenylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H16I2N3O2-
assistant