Synonyms: Duclauxin;1732-37-2;NSC 258308;7H-8,15b-Methano-1H,3H,12H-benzo(de)cyclohepta(1,2-g:3,4,5-d'e')bis(2)benzopyran-3,7,12,15(8H)-tetrone, 16-(acetyloxy)-8a,15a-dihydro-4,11-dihydroxy-8a-methoxy-6,9-dimethyl-, (8R-(8alpha,8abeta,15abeta,15balpha,16S*))-