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What is the molecular formula of the compound with this IUPAC name tert-butyl (2S,4R)-9-oxo-6-azapentacyclo[8.8.0.02,4.02,7.012,17]octadeca-1(18),7,10,12,14,16-hexaene-6-carboxylate ?
user
C22H21NO3
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