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Figure 1
Crystal packing of form I of DMCA. Note that molecules 1 and 4 are in a γ-type environment, while molecules 2 and 3 (translationally related to 4) are in the α-type environment and potentially reactive upon irradiation.

IUCrJ
Volume 2| Part 6| October 2015| Pages 653-660
ISSN: 2052-2525
doi:10.1107/S2052252515017297