步骤6:按照表1进行结果评价:48. ... (d,j=8.6hz,1h),4.57-4.50(m,1h),4.19(t,j=6.6hz,2h),4.10(s,3h),4.04(dd,j=11.4,4.0hz,1h),3.89-3.82(m,1h) ...
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