(4S,8S,9R,12E)-8,9,16,18-Tetrahydroxy-4-methyl-3-oxabicyclo[12.4.0]octadeca-12,14,16,18-tetraen-2-one monohydrate.

The asymmetric unit of the title compound, C18H24O6·H2O, contains a 14-membered macrolide mol­ecule and a water mol­ecule. In the crystal structure, intra­molecular C—H⋯O and O—H⋯O hydrogen bonds help to stabilize the mol­ecular conformation, while inter­molecular O—H⋯O hydrogen bonds link the mol­ecules, forming an infinite network. The absolute configuration was assigned by comparison with related zearalenone compounds, but needs verification.