You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[(1E,4E)-1,5-diphenylpenta-1,4-dien-3-ylidene]amino]-2-hydroxy-2-phenylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H24N2O2
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