Showing structure for methyl (1s,3s,16e,21r,22s,23s,24r,26z)-26-ethylidene-22,23,24-trihydroxy-13,17-dimethyl-9,18-dioxo-2,4,10,19,25-pentaoxatricyclo[19.3.1.1³,⁷]hexacosa-5,16-diene-6-carboxylate