You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 5-(2-methylprop-2-enoyloxy)-6-[1-(2-methylprop-2-enoyloxy)ethyl]cyclohexa-1,3-diene-1,2,4,5-tetracarboxylic acid into molecular formula.
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C20H20O12
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