Figure 1
The structure of (I), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level. N and O atoms are shaded grey and dashed lines indicate hydrogen bonding. [Symmetry codes: (i) −x + 2, −y, −z; (ii) −x + 2, −y + 1, −z; (iii) −x + 2, −y, −z + 1.] |