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Structure superpositions of four β-CDs (orange and cyan wireframes) in complex with various 2° amine TCAs (sticks), PRT (1; blue), MPL (2; red), NRT (i; green), DPM (ii; magenta) [23,28], and in the uncomplexed β-CD·12H2O (iii; black) [45], viewed from (a) the top and (b) the side. The rms fits are given in the middle inset.
