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. 2021 Dec 16;17(2):159–165. doi: 10.1038/s41565-021-01021-z

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© The Author(s), under exclusive licence to Springer Nature Limited 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 3 — Partial ¹H-NMR spectra (500 MHz, 10 °C, 1 mM in C₆D₆) of (S,R,R) ±n at PSS (λ_irr = 365 nm, 18 min; top), after partial thermal relaxation (60 °C, 6 min; middle) and at equilibrium (bottom). The conversion of key signals is indicated with grey arrows (signal labels are shown in Fig. 1a; for more information see Supplementary Figs. 1–22 and Supplementary Tables 1 and 2).