number atom shift 1 C 159.053 2 C 145.589 3 C 73.486 4 C 126.028 5 C 160.544 6 C 154.886 7 C 93.270 8 C 80.283 9 C 84.474 10 C 100.254 11 N 86.399 12 N 256.886 13 N 232.320 14 N 263.251 15 N 178.298 29 P 0.726 30 P 1.330 31 P -7.249 32 H 9.883 33 H 9.186 34 H 5.262 35 H 5.061 36 H 5.346 37 H 4.948 38 H 5.191 39 H 7.158 40 H 5.516 41 H 6.273 42 H 0.559 43 H 7.175 44 H 4.668 45 H 7.090 46 H 4.637 47 H 7.456