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system
Name the molecular formula for the molecule established as 2-[2-amino-1-[(12S)-7-bromo-2,3-dioxo-1,4-diazatricyclo[7.3.1.05,13]trideca-5,7,9(13)-trien-12-yl]-2-oxoethyl]-5-[[(2-methylpropan-2-yl)oxycarbonylamino]methyl]benzoic acid using the IUPAC nomenclature.
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C26H27BrN4O7
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