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Figure 4 Ball-and-stick model of the most prominent C—H⋯O interactions (grey) of an itaconic anhydride molecule with six other surrounding molecules; with exception of the hydrogen atoms, which are shown as spheres with common isotropic radius, all other atoms are represented as thermal displacement ellipsoids showing the 50% probability level of the corresponding atom. [Symmetry codes: (1) 1 − x, − + y, + z; (2) − + x, − y, 1 − z; (3) − x, 2 − y, − + z; (4) 1 − x, + y, − z; (5) − x, 2 − y, + z] |