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Figure 4 View of the graph set motif C(4). The atoms involved are H42—N4—H41⋯O3(ii)⋯H42—N4(iii) etc. The hydrogen bonds pertinent to the C(4) motif are enhanced (blue: N; red: O; large grey spheres: C; small grey spheres: H; symmetry codes (i) = x, y − 1, z; (ii) = 1 − x, − + y, − z; (iii) = 1 − x, + y, − z; (iv) = x, y + 1, z). |