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Figure 2 A section of the three-dimensional packing diagram of the title compound viewed parallel to the x axis. Bond types: thick continuous bonds, molecule 1; open continuous bonds, molecule 2; thick dashed bonds, classical H bonds; thin dashed bonds, C—H⋯O interactions. For clarity, the ethoxy substituents and all H atoms not involved in the H bonds were omitted and the rings at N1 are shown only as their ipso carbons. |
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