atom_id atom_symbol chemical_shift multiplet coupling_constant 20 H 1.03 d 7.1 21 H 1.03 d 7.1 22 H 1.03 d 7.1 23 H 2.20 m NA 24 H 1.52 ddd 13.3,13.3,3.8 25 H 2.28 m NA 26 H 3.12 m NA 27 H 2.89 br d 15.1 28 H 3.23 m NA 29 H 1.81 m NA 30 H 1.87 m NA 31 H 1.68 m NA 32 H 2.22 m NA 33 H 2.31 m NA 34 H 2.43 d 16.5 35 H 2.74 dd 16.5,7.0 36 H 1.90 m NA 37 H 3.09 m NA 38 H NA NA NA 39 H 1.58 ddd 13.3,13.3,3.7 40 H 2.02 m NA 41 H 1.66 m NA 42 H 2.01 m NA 43 H 3.11 m NA 44 H 3.21 m NA