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Figure 2 Part of the crystal packing of the title compound via the N—H⋯O hydrogen bonds parallel to [001], building (8) and (12) rings. The intermolecular hydrogen bonds are shown as dotted lines and the H atoms not involved in hydrogen bonding have been omitted for the sake of clarity. The CH(CH3)2 substituents are shown as balls. The intramolecular N—H⋯O hydrogen bonds are not shown. |