The infrared spectrum points to a complex organic material containing aromatic and sulfate moieties, likely a polymeric or heavily modified organic matrix. While the nearest library match is dihydroxy-dioxotungsten, the observed bands from 1096 to 3338 cm⁻¹ are dominated by alkyl, carbonyl, hydroxyl/amide, and sulfate features that are more typical of an aromatic/sulfate-containing organic substance. The assignment remains uncertain because the precise identity cannot be confirmed from the library hit alone; however, the collective spectral evidence is most consistent with an organic material rich in carboxyl, amide, aliphatic chains, and sulfate groups 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.