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Figure 6
The combination of three hydrogen bonds in the structure of (VII ), i.e. N1—H1⋯O3, O3—H3⋯O1 and O4—H4⋯O2. This gives C(5), C(7) and C(13) chains which combine to give R22(8) and R22(13) rings. [Symmetry codes: (iii) −½ + x, ½ + y, z; (vi) −½ − x, ½ + y, ½ − z.] |


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