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What is the molecular formula of the molecule identified by 9,17-dihydroxy-13,17-dimethyl-3-oxo-5-pentyl-4,8,14-trioxatetracyclo[7.7.1.02,7.011,16]heptadeca-2(7),10,12,15-tetraene-10-carbaldehyde ?
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C22H26O7
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