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Figure 1 The molecular structure of (I), showing the atom-numbering scheme and displacement ellipsoids at the 60% probability level [symmetry codes: (i) −x + y, 1 − x, z; (ii) + x-y, + x, − z; (iii) 1 − y, 1 + x-y, z; (iv) − + y, − x + y, − z; (v) − x, 4/3 − y, − z.] |