number atom shift 1 C 159.171 2 C 145.545 3 C 70.309 4 C 126.005 5 C 160.490 6 C 154.967 7 C 95.605 8 C 81.224 9 C 85.451 10 C 101.038 11 N 86.381 12 N 257.030 13 N 232.874 14 N 263.218 15 N 179.929 23 P 0.985 24 H 9.910 25 H 9.155 26 H 4.978 27 H 4.730 28 H 5.339 29 H 5.047 30 H 5.176 31 H 7.215 32 H 5.553 33 H 6.331 34 H 0.600 35 H 7.031 36 H 4.089 37 H 3.660