Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O6—H6OA⋯O2i | 0.825 (10) | 1.954 (14) | 2.772 (4) | 171 (5) |
| O6—H6OB⋯O9ii | 0.820 (10) | 1.945 (18) | 2.739 (3) | 163 (5) |
| O7—H7OA⋯O13 | 0.816 (10) | 2.45 (3) | 3.194 (6) | 153 (5) |
| O7—H7OB⋯O20 | 0.817 (10) | 2.12 (3) | 2.877 (9) | 155 (7) |
| O8—H8OA⋯O17 | 0.827 (10) | 1.924 (14) | 2.742 (5) | 170 (4) |
| O8—H8OB⋯O5iii | 0.816 (10) | 1.996 (13) | 2.807 (4) | 173 (5) |
| O14—H14A⋯O1 | 0.818 (10) | 1.938 (17) | 2.732 (3) | 163 (5) |
| O14—H14B⋯O10iv | 0.819 (10) | 1.968 (12) | 2.784 (4) | 175 (5) |
| O15—H15B⋯O5iii | 0.815 (10) | 2.28 (4) | 3.012 (5) | 150 (7) |
| O15—H15A⋯O19 | 0.818 (10) | 2.17 (5) | 2.831 (7) | 138 (7) |
| O16—H16A⋯O18 | 0.818 (10) | 1.875 (12) | 2.691 (5) | 175 (4) |
| O16—H16B⋯O13iii | 0.817 (10) | 1.945 (17) | 2.748 (5) | 167 (6) |
Symmetry codes: (i) 
; (ii) 
; (iii) 
; (iv) 
.