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Crystal structures of atropisomers of 2 and 1H NMR spectra (inner core region) of α,β,α,β‐P1‐MSA (a), α2,β2‐P1‐MSA (b), α3,β‐P1‐MSA (c), and α4‐P1‐MSA (d) recorded in CD3CN along with illustrations of the proposed intramolecular interactions of MSA with different P1 atropisomers.
