number atom shift 1 C 109.679 2 C 70.915 3 C 75.006 4 C 66.000 5 C 75.072 6 C 61.968 13 C 95.004 14 C 76.217 15 C 70.566 16 C 80.355 17 C 71.829 18 C 63.298 24 H 4.438 25 H 4.855 26 H 4.218 27 H 4.417 28 H 4.060 29 H 4.985 30 H 5.586 31 H 1.515 32 H 0.629 33 H 2.823 34 H 0.096 35 H 5.911 36 H 4.054 37 H 5.440 38 H 3.942 39 H 5.176 40 H 4.707 41 H 5.083 42 H 1.323 43 H 0.621 44 H 2.095 45 H -0.167