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Figure 3 A large part of the crystal structure of (I), showing the formation of a hydrogen-bonded chain built from N—H⋯O and C—H⋯O. For clarity, H atomes not involved in the hydrogen bonding have been omitted. Dashed lines indicate hydrogen bonds. [symmetry code: (B) x,-1 + y,z, (C) −1 + x,y,z]. |