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13C NMR (101 MHz, CDCl3) ¦Ä 139.35, 125.62, 78.84, 70.76, 52.01, 48.82, 47.98, 47.10, 45.30, 40.49, 39.04, 36.39, 35.58, 32.79, 31.97, 30.39, 29.99, 29.89, 28.08, 26.44, 26.09, 26.01, 25.45, 21.12, 19.98, 19.30, 18.29, 18.10, 14.01.

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