Moon, D.; Jeon, S.; Ryoo, K. S.; Choi, J.-H. Synthesis, Crystal Structure and Hirshfeld Surface Analysis of 3,14-Dimethyl-2,6,13,17-tetraazatricyclo(16.4.0.07,12)docosane-2-(nitric Acid). ajc 2020, 32, 697-702.