10-(9-Butyl-8-(4-carboxy-3-methyl-3-butenyl)-9-((3-carboxypropanoyl)oxy)-3-methyl-1,7-dioxaspiro[5.5]undec-2-yl)-5-hydroxy-4,8-dimethyl-2,6,8-decatrienoic acid AIDS-139358 AIDS139358 NSC648386 Reveromycin A