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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1AA⋯O6	1.05	2.00	2.979 (4)	154
N1—H1BB⋯O3	0.86	2.14	2.979 (4)	164
O20—H20B⋯O4i	0.90	2.12	3.013 (4)	171
O20—H20A⋯O1i	0.76	2.21	2.927 (3)	158

Symmetry code: (i) .