atom_id symbol chemical_shift mult coupling 24 H 3.97 s NA 25 H 3.97 s NA 26 H 3.97 s NA 27 H 6.34 s NA 28 H 12.19 s NA 29 H 9.24 br s NA 30 H 8.21 d 9.2 31 H 7.04 d 9.2 32 H 8.11 br s NA 33 H 7.04 d 9.2 34 H 8.21 d 9.2 35 H 2.28 s NA 36 H 2.28 s NA 37 H 2.28 s NA