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 motualevic acid F A 2H-azirine that is 2H-azirene-2-carboxylic acid substituted by a 13,13-dibromotrideca-1,12-dien-1-yl group at position 3 (the 2R stereoisomer). It is isolated from the marine sponge Siliquariaspongia sp. and exhibits antibacterial properties. | 

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