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What is the molecular formula of the molecule identified by 2-[(E)-[(1R,8R)-1,8-diphenylspiro[11-oxatricyclo[6.2.1.02,7]undeca-2,4,6-triene-10,1'-cyclohexane]-9-ylidene]methyl]-5,5-dimethyl-1,3,2lambda5-dioxaphosphinane 2-oxide ?
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C33H35O4P
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