(-)-.alpha.-Conidendrin .alpha.-Conidendrin 518-55-8 A13-17106 AIDS-009901 AIDS009901 Conidendrin NSC4586 NSC641524 NSC642786 Naphtho[2,3-c]furan-1(3H)-one, 3a,4,9,9a-tetrahydro-6-hydroxy-4-(4-hydroxy- 3-methoxyphenyl)-7-methoxy-, (3aR,4S,9aR)-