Gravar-mail: Crystal structure of 7-phenyl-7-(2,4,5-trimethyl-3,6-dioxo­cyclo­hexa-1,4-dien-1-yl)hepta­noate 1,3-dihy­droxy-2-(hy­droxy­meth­yl)propan-2-aminium monohydrate: a new solid form of seratrodast