You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[[2-[[(2E)-2-ethenylpenta-2,4-dienoyl]amino]-3-phenylpropanoyl]amino]-3-phenylpropyl] acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H30N2O4
assistant