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system
Name the molecular formula for the molecule established as trimethyl (1S,9R,15S)-8-benzyl-14-(cyclobutanecarbonyl)-8,12,14-triazatetracyclo[7.7.0.01,13.02,7]hexadeca-2,4,6,10,12-pentaene-10,11,15-tricarboxylate using the IUPAC nomenclature.
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C31H31N3O7
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