已知三个化合物(A、B、C)的结构,其中化合物A的碳谱数据已列在表中,请将化合物B、C的碳谱数据进行归属并填写在表中对应的位置。 化合物B的 13 C-NMR数据:15.7q,16.4q,21.2q,25.7t,26.3t,27.3t,27.9q,27.5q,28.0t,28.4q,28.8q,30.9t,31.6s,37.7s,37.9t,38.6s,39.4t,41.9t,43.8s,44.3s,45.6d,47.4d,47.5s,59.3d,73.7d,78.7d,128.0d,172.3s,181.3s,201.3s。 化合物C的 13 C-NMR数据:15.6q,18.1q,18.9t,19.1q,21.4q,26.3q,28.3q,29.1q,30.8t,32.4s,34.2t,35.3t,36.8s,37.3t(2个),39.8t,40.4t,43.6s,46.6s,47.7s,48.6d,48.8s,55.1d,60.9d,67.9d,128.9d,170.0s,180.9s,200.0s,217.6s。 NO. A B C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 39.4t 28.0t 78.7d 38.6s 45.6d 19.0t 34.1t 44.0s 63.1d 37.9s 202.5s 128.9d 173.0s 46.7s 28.3t 27.6t 33.0s 50.0d 4214t 45.0s 32.0t 39.0t 23.2q 65.2t 17.4q 19.1q 23.8q 28.7q 29.2q 180.4s