You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [2-acetyloxy-5-[2-(2-hydroxyoxolan-3-yl)ethyl]-4,5-dimethylspiro[9-oxatricyclo[6.2.2.01,6]dodecane-11,2'-oxirane]-10-yl] 2-methylbut-2-enoate into molecular formula.
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C27H40O8
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