The present sample is identified as Poly(vinyl methyl ether) based on reference library comparison, with a moderate confidence level. The spectrum exhibits a dominant band at 1098 cm⁻¹, which is consistent with the C–O–C asymmetric stretching vibration of the methoxy ether moiety in the polymer 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.