You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[2-bromo-6-[(E)-[(5-chloro-1-benzofuran-2-carbonyl)hydrazinylidene]methyl]-4-iodophenoxy]acetic acid ?
user
C18H11BrClIN2O5
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