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What is the molecular formula of the molecule identified by [(3R,6R,8S,11S,16S)-17-acetyloxy-8-tert-butyl-16-methyl-5,15,18-trioxo-2,4,14,19-tetraoxahexacyclo[8.7.2.01,11.03,7.07,11.013,17]nonadecan-6-yl] acetate ?
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C24H28O11
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