atom_id symbol chemical_shift mult coupling 19 H 1.77 t 1.6 20 H 1.77 t 1.6 21 H 1.77 t 1.6 22 H 3.65 d 14.8 23 H 2.73 br d 14.8 24 H 4.16 d 13.2 25 H 4.12 d 13.2 26 H NA NA NA 27 H 1.91 dt 2.8,7.6 28 H 0.8 dt 4.0,7.6 29 H 0.27 dt 3.2,4.0 30 H 1.52 ddd 7.6,6.4,4.4 31 H 1.28 s NA 32 H 1.28 s NA 33 H 1.28 s NA 34 H 1.26 t 11.2 35 H 2.38 dd 11.2,6.0 36 H 5.11 m NA