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Ethyl (1S,9R,13Z,16R)-13-(5-bromo-2-oxo-1H-indol-3-ylidene)-9-methyl-14-oxo-8-oxa-12-thia-10,15-diazatetracyclo[7.6.1.02,7.011,15]hexadeca-2,4,6,10-tetraene-16-carboxylate


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