134418-29-4 AIDS-002594 AIDS002594 Butanedioic acid, monoester with [1R-[1.alpha.,2.alpha.,4a.alpha.,5.beta.(E),8a.beta.]]-3-[2-[decahydro-6-hydroxy-5-(hydroxymethyl)-5,8a-dimethyl-2-methylene-1-naphthalenyl]ethylidene]-2(3H)-furanone DASM Dehydroandrographolide succinic acid ester