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What is the molecular formula of the compound with this IUPAC name tert-butyl N-[(2R)-1-[(1S,10S,12R,17S)-9,9-dimethyl-8,18-dioxa-14-azatetracyclo[8.8.0.02,7.012,17]octadeca-2,4,6-trien-14-yl]-4-methylsulfanyl-1-oxobutan-2-yl]carbamate ?
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C27H40N2O5S
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