4′-Amino-2,2′′-dioxo-2,2′′,3,3′′-tetra­hydro-1H-indole-3-spiro-1′-cyclo­pent-3′-ene-2′-spiro-3′′-1H-indole-3′,5′,5′-tricarbonitrile dihydrate

In the title compound, C(22)H(12)N(6)O(2)·2H(2)O, the cyclo­pentene ring adopts an envelope conformation, with the spiro C atom bonded to the dicyano-substituted C atom deviating by 0.437 (2) Å from the plane of the remaining four atoms in the ring. The puckering and smallest displacement asymmetry parameters for the ring are q (2) = 0.275 (2) Å, ϕ = 212.4 (4)° and Δ(s)(C(2)) = 2.7 (2). The dihedral angle between the two indole groups is 60.1 (1)°. The structure contains inter­molecular N—H⋯O hydrogen bonds involving the indole groups and O—H⋯O and O—H⋯N hydrogen bonds involving the water mol­ecules.