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Molecular modeling predicts Salvinorin A is a structurally novel κ opioid ligand. A shows the structure of Salvinorin A, enadoline, U69593 and LSD whereas B shows a superimposition of the structures of Salvinorin A and U69593. C shows potential residues on the KOR identified by molecular modeling, which might interact with Salvinorin A, and D shows a model of Salvinorin A's interactions with the KOR (see supporting information for further details).
