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Chemical structure of common boswellic acids found in frankincense. Two-dimensional chemical structures were obtained from Pub Chem. Pub Chem CIDs are as follows: α-boswellic acid, 637234; acetyl-α-boswellic acid, 15181201; β-boswellic acid, 168928; acetyl-β-boswellic acid (ABA), 11386458; 11-keto-β-boswellic acid (KBA), 9847548; 3-acetyl-11-keto-β-boswellic acid (AKBA), 11168203.
