You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2S)-N-[3-(N-ethylanilino)propyl]-2-[[(E)-3-(4-methoxyphenyl)prop-2-enoyl]amino]propanamide into molecular formula.
user
C24H31N3O3
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