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What is the molecular formula of the compound with this IUPAC name [2-oxo-2-(4-phenylphenyl)ethyl] 2-[(1R,2S,6S,7S,8S,10S)-3,5-dioxo-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-en-4-yl]acetate ?
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C27H23NO5
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