| http://www.w3.org/ns/prov#value | - [??]D 24 ???49.9 (c 0.74, CHCl3); IR (film) ?? 3424, 2974, 1729, 1689, 1468, 1318, 1247, 1169, 1112, 754 cm???1; 1H NMR (400 MHz, CDCl3) ?? 1.05 (3H, s), 1.12 (3H, d, J=6.9 Hz), 1.23 (3H, d, J=6.8 Hz), 1.33 (3H, s), 2.17 (3H, s), 2.24-2.35 (1H, m), 2.43 (1H, dd, J=157, 3.6 Hz), 2.49 (1H, dd, J=15.6, 9.1 Hz), 2.55-2.64 (2H, m, including OH), 2.68-2.77 (1H, m), 2.80 (3H, s), 2.81 (3H, s), 2.92-3.06
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