You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-N'-[(E)-[(4-aminophenyl)-phenylmethylidene]amino]-2-N'-[(Z)-[(4-aminophenyl)-phenylmethylidene]amino]ethanediimidamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H26N8
assistant