AIDS-132143 AIDS132143 Ircinianin NSC625520 Spiro[furan-2(5H),4'-[4H]inden]-5-one, 5'-[(1E)-5-(3-furanyl)-2-methyl-1-pentenyl]-1',2',3',3'a,5',7'a-hexahydro-3-hydroxy-3',4,7'-trimethyl-