Due to the perceived training data limitations in processing 2D NMR, the 13 spectra were tabulated by hand with other minor notes, shown in Appendix A. These manual assignments in text form that were presented to 3.5 Sonnet yielded the best compound and allowed the author of the manuscript to validate the structure. The textual data was submitted with Prompt 4 to three models for testing, along with a request for correct stereochemistry. 3.5 Sonnet's response of (S)-ibuprofen ethylester was the most logical when referencing spectra, and is believed to be the correct structure for solving the challenging problem, while ChatGPT-4o and Grok-2 failed to provide correct structures.