Symmetry codes: (i) x − 1/2, −y + 3/2, −z + 1; (ii) x + 1/2, −y + 3/2, −z + 1; (iii) x − 1, y + 1/2, −z + 3/2, (iv) −x + 1, y − 1/2, z − 3/2.

Hydrogen bonds	D⋯A (Å)	H⋯A (Å)	D—H—A (°)	ρBCP (e Å−3)	∇ 2ρBCP (e Å−5)	H r (Ha a0 −3)
O1A⋯H2A—O2Ai	2.696 (2)	1.723	159.99	0.259	2.568	−0.034
O2A—H2A⋯O3Aii	2.696 (2)	1.723	159.99	0.255	2.551	−0.033
O1B⋯H2B—O2Biii	2.657 (1)	1.723	151.66	0.259	2.850	−0.035
O2B—H2B⋯O1Biv	2.657 (1)	1.723	151.66	0.255	2.838	−0.034