4-[N,N-Bis(2-hydroxy­imino-2-phenyl­ethyl)­amino]-1,5-di­methyl-2-phenyl-2,3-di­hydro-1H-pyrazol-3-one monohydrate

The title compound, C₂₇H₂₇N₅O₃·H₂O, is built up from pyrazolinone, phenyl and aceto­phenone oxime moieties. The 2-­phenyl substituent is nearly perpendicular to the pyrazo­linone ring, with a dihedral angle of 87.66 (1)°. The aceto­phenone oxime moieties are twisted out of the pyrazolinone-ring plane by 47.04 (1)°. The mol­ecules in the crystal pack in an antiparallel fashion and are held together by hydrogen-bonded water mol­ecules and intermolecular O—H⋯O and O—H⋯N hydrogen bonds.