You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [7-hydroxy-3,6,6-trimethyl-4-[(E)-3-(4-nitrophenyl)prop-2-enoyl]oxycyclohept-2-en-1-yl] benzoate into its molecular formula.
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C26H27NO7
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