Table 1. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1C—H11C⋯O21A	0.932 (19)	1.911 (19)	2.8287 (18)	167.7 (16)
N1C—H12C⋯O12Ai	0.953 (18)	2.077 (17)	2.8519 (16)	137.4 (14)
N1C—H12C⋯O12Bi	0.953 (18)	2.204 (17)	2.9606 (16)	135.6 (14)
N41C—H41C⋯O22Bii	0.979 (19)	1.994 (19)	2.9494 (17)	164.5 (16)
N41C—H42C⋯O11Biii	0.930 (18)	2.120 (19)	3.0122 (17)	160.3 (16)
O11A—H11A⋯O12B	1.00 (2)	1.57 (2)	2.5635 (15)	173 (2)
O21B—H21B⋯O41Civ	0.99 (2)	1.58 (2)	2.5644 (14)	171 (2)
O22A—H22A⋯O11Bi	0.90 (2)	1.65 (2)	2.5363 (17)	170.8 (18)

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