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(A) D,L-alternating Hexapyrrolinone (−)-59; (B) The Predicted Solution Structure of (−)-59; (C) ORTEP Diagram of (−)-59; Stereoviews Illustrating a Nanotube-Like Assembly of (−)-59 in the Solid State; (D) Side View with Intermolecular Hydrogen Bonds Illustrated; and (E) With Side-Chains Removed.
