You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-(2,5-dimethylphenyl)-N'-[(Z)-[4-oxo-4-(4-phenylmethoxyanilino)butan-2-ylidene]amino]oxamide into molecular formula.
user
C27H28N4O4
assistant