You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(2,6-dichlorophenyl)-2-[(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)diazenyl]-3-hydroxy-3-phenylprop-2-enamide .
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C26H21Cl2N5O3
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