atom_id symbol chemical_shift mult coupling 28 H 4.0 s NA 29 H 4.0 s NA 30 H 4.0 s NA 31 H 7.92 d 1.9 32 H 3.88 s NA 33 H 3.88 s NA 34 H 3.88 s NA 35 H 7.94 d 1.9 36 H 4.1 s NA 37 H 4.1 s NA 38 H 4.1 s NA 39 H 7.33 s NA 40 H 8.25 s NA 41 H 8.35 d 8.5 42 H 7.7 d 8.5 43 H 6.18 s NA 44 H 6.18 s NA