Showing structure for 17'-(1-hydroxyethyl)-5',13',25'-trimethyl-11',22'-dioxo-2',10',16',23'-tetraoxaspiro[oxirane-2,26'-tetracyclo[22.2.1.0³,⁸.0⁸,²⁵]heptacosane]-4',12',18',20'-tetraen-6'-yl acetate