Showing structure for 17'-(1-hydroxyethyl)-13',25'-dimethyl-11',22'-dioxo-2',10',16',23'-tetraoxaspiro[oxirane-2,26'-tetracyclo[22.2.1.0³,⁸.0⁸,²⁵]heptacosane]-4',12',18',20'-tetraene-5'-carboxylic acid