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Figure 8
The centrosymmetric cyclic hydrogen-bonded hetero­tetra­meric structure of (III)[link]. (For symmetry codes, see Table 4[link].)

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 72| Part 2| February 2016| Pages 105-111
doi:10.1107/S2053229615024821
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