You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-[[[2-(2,3-dichlorophenoxy)acetyl]hydrazinylidene]methyl]-2-methoxyphenyl] 3,4-dichlorobenzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H16Cl4N2O5
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