Figure 2
Part of the crystal structure of compound (I), showing the formation of a centrosymmetric tetramolecular aggregate built from N—H⋯O hydrogen bonds. For the sake of clarity, H atoms bonded to C atoms have been omitted. Atoms marked with an asterisk (*) are at the symmetry position (1 − x, 1 − y, 1 − z), and hydrogen bonds are shown as dashed lines |