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Packing diagram of compound 1, viewed parallel to the y-axis in the range y ≈ 1/4. Hydrogen bonds are indicated by dashed lines. Hydrogen atoms not involved in the hydrogen bonds are omitted for clarity. Hydrogen bond details (Å,°) for N17–H17…N1: H…N 0.88(2), N…N 2.861(2), N–H…N 158(2), operator 1/2 + x, 1 1/2 − y, z.
