Table 2. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H6⋯Cl2ii	0.95 (6)	2.29 (6)	3.211 (7)	163 (6)
O3—H7⋯N1iii	0.97 (4)	1.72 (4)	2.685 (10)	174 (9)
O4—H8⋯Cl2i	0.96 (4)	2.15 (5)	3.041 (6)	155 (6)
O4—H9⋯O3iv	0.95 (2)	1.93 (3)	2.841 (8)	160 (8)

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .