The FTIR evidence does not support a firm assignment to the library top hit as a specific material. Instead, the spectrum is more safely described as an oxygenated aliphatic polymeric or oligomeric material showing a broad O-H/N-H band near 3278 cm-1, aliphatic C-H stretches at 2923 and 2856 cm-1, a strong carbonyl band at 1743 cm-1, bands at 1220 and 1018 cm-1 consistent with C-O-containing functionality, and features at 1641 and 1545 cm-1 that may indicate bound water, amine-related deformation, or other conjugated/amide-like contributions. The library pattern includes poly(vinyl alcohol), poly(ethylenimine), epichlorohydrin-modified materials, polyols, and carbohydrate-like oxygen-rich compounds, which collectively supports a broad oxygen-rich organic material direction rather than a secure identification of one named polymer