2H-6,13a-Ethenonaphtho[2'',3'':4',5']cyclohepta[1',2':4,5]benzo[1,2-b]pyran-2-carboxylic acid, 3,4,6,7,7a,8,13,14-octahydro-5,7a,9-trihydroxy-11-methyl-4,7,8,13-tetraoxo-2-[(2S)-tetrahydro-5-oxo-2-furanyl]-, methyl ester, (2R,7aS)- AIDS-210366 AIDS210366 Chaetomanone