You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[[2-(2-methylphenyl)-4-[[2-(4-methylphenyl)acetyl]amino]benzoyl]amino]-4-methylsulfanylbutanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H30N2O4S
assistant