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Figure 2
A view of the packing of (I)[link], projected down c, showing the chains of dimers and their inter­nal hydrogen-bonding linkage (see Comment). For clarity, only the carboxyl­ate end of the butenoate units have been drawn. [Symmetry codes: (i) −x, −y, −z; (v) −x + 1, −y, −z.]

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CHEMISTRY
ISSN: 2053-2296
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