Figure 2 Part of the crystal packing of the title compound via the N-H...O hydrogen bonds parallel to [001], building [R_{2}^{2}](8) and [R_{2}^{2}](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.  [article HTML]