3,5-Bis(2-hydroxyethyl)-4-oxahexacyclo[5.4.1.0 2,6 .0 3,10 .0 5,9 .0 8,11 ]dodecane

The title mol­ecule, C15H20O3, exhibits C—C bond lengths that deviate from normal values. A number of long and short C—C bonds are observed. Neighbouring mol­ecules inter­act via strong O—H⋯O hydrogen bonds, forming two-dimensional hydrogen-bonded sheets.