The spectrum is consistent with a material that contains carboxylate anions and an imidazole or analogous aromatic N‑heterocycle. This interpretation is driven by compelling literature analogues, while reference library comparison yields only a low‑confidence match to a chemically unrelated copolymer FTIR In-Depth Interpretation was not selected for this task, so this section shows the library-search result only and no deep AI interpretation was run.