一、某化合物之物化數據如下，請逐一指出不當之處，並刪除或改正之。（42 分）[α]D＋200.0∘(c＝6.0, MeOH);IR (KBr) νmax 3397, 2928, 1730, 1614, 1517, 1462, 1335, 1217, 1114, 1034, 838 cm;UV λmax (log ε) 277.5 (3.73) µm;1H NMR (CD3OD, 400 MHz) δ 6.42 (2H, s), 6.31 (2H, s), 6.25 (1H, d, J＝2.00 Hz), 6.18(1H, d, J＝2.00 Hz), 4.59 (1H, d, J＝4.42 Hz), 4.45 (1H, t, J＝8.53 Hz), 4.12 (1H, d,J＝0.82 Hz), 3.75 (1H, dd, J＝4.41, 8.83 Hz), 3.52 (1H, t, J＝8.53 Hz), 3.01 (1H, dq,J＝1.62, 8.45 Hz), 3.72 (3H, s);13C NMR (CD3OD, 400 MHz) δ 160.1 (s), 156.3 (s), 149.1 (s, 2C), 148.6 (s), 147.1(s, 2C), 137.9 (s), 134.7 (s), 134.6 (s), 133.7 (s), 123.0 (s), 106.4 (d, 2C), 105.5 (d, 2C),103.3 (d), 102.9 (d), 89.4 (d), 75.0 (t), 59.7 (d), 56.7 (q), 56.5 (d), 52.1 (d);ESIMS (positive mode) m/e (rel. int. %) 469.0 (100, [M+H]＋);HRFABMS [M]＋ m/z 468.141 (calcd for C25H24O9, 468.142).