Organic Chemistry had some inaccurate 1H-NMR and 13C-NMR chemical shifts, and DEPT-NMR assignments were inaccurate. 3.5 Sonnet proton and carbon-13 peak chemical shifts were broad and less accurate, and some moieties used for identification were incorrect. Gemini 1.5 Pro changed the molecular formula from that was provided in the spectra, had a correct 1H-NMR integration value, and proposed moieties not present in its own identification. -A peak around 160-170 ppm suggests a carbon double-bonded to a heteroatom.