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Interestingly, the diastereotopic nature of the methylenes H2C(6) and H2C(18) solely exhibited single peak at Î»ÒÆÖµ5.96 in the 1H-NMR spectrum, indicating a remarkable fluxional behavior for »¯ºÏÎï1 that was demonstrated further in variable-temperature 1H-NMR spectroscopic analyses with a coalescence temperature Tc = 295.6 K

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