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Examples of selected bivalent ligands from the literature. The reported most active molecules for μ-δ (1, MDAN-21), 5HT4-5HT4 (2), D2-D2 (3 and 4), CB1-CB1 (5), μ-CB1 (6), D2-NTS1 (7), A2A-D2 (8), A1-β2 (9), BRD4-VHL (10) and CA-CA (11) dimers
