Evonimine,O9,O15-dideacetyl-24,25-didehydro-8-deoxo-8-hydroxy-, cyclic 8,4:15,3-esterwith 4-[(4-carboxy-2,6-dimethoxyphenoxy)methyl]-3-pyridinecarboxylic acid,9-[2-(acetyloxy)-2-methylpropanoate], (8a,24Z)-