You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-acetamido-N-[1-[[1-amino-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]-3-phenylpropanamide into molecular formula.
user
C28H31N7O4
assistant