5,31-Di­aza-2,8,15,18,21,28,34,41,44,47-deca­oxahepta­cyclo­[46.4.0.04,32.06,30.09,14.022,27.035,40]do­penta­conta-1(48),4,6(30),9(14),10,12,22(27),23,25,31,35(40),36,38,49,51-penta­deca­ene monohydrate

In the title compound, C40H40N2O10·H2O, each dual 17-crown-5 unit crystallizes with one solvent water mol­ecule. The crown units are connected by a pyrazine ring. One oxo group in a crown moiety is disordered over two sites, with a refined occupancy ratio close to 1:1. The water mol­ecule is linked to the crown unit by bifurcated O—H⋯O hydrogen bonds. In the crystal, mol­ecules are linked by weak C—H⋯N and C—H⋯O inter­actions for the packing.