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Cg1 is the centroid of the C1/C2/C3/N1/N2 ring.
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| C6H6AO2 | 0.98 | 2.08 | 3.016(2) | 160 |
| C5H5CO3i | 0.98 | 2.52 | 3.1803(19) | 124 |
| C7H7O2ii | 0.95 | 2.29 | 3.0663(16) | 139 |
| C5H5B Cg1iii | 0.98 | 2.98 | 3.8823(18) | 153 |
Symmetry codes: (i) 
; (ii) 
; (iii) 
.
