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Figure 3 A larger portion of the crystal structure of (I), showing the formation of a hydrogen-bonded chain built from C—H⋯O. For clarty, H atomes not involved in the hydrogen bonding have been omitted. Dashed lines indicate hydrogen bonds. [symmetry code: (F) 1 − x, 1 − y, 1 + z,, (G) 1 − x, − + y, − z]. |