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Figure 3
Two chains of mol­ecules of com­pound 4, running vertically, linked by the hy­dro­gen bonds N2⋯H022—O1 (thick dashed lines). The view direction is perpendicular to the bc plane, in the region a ≃ 0.75. Atom names indicate the asymmetric unit. H atoms not involved in these interactions are omitted for clarity.

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COMMUNICATIONS
ISSN: 2056-9890