2,7-(Epoxy[1,11,13]pentadecatrien[1]yl[15]ylidenenitrilo)naphtho[2,1-b]furan-1,6,9(2H)-trione, 5,17,21-tris(acetyloxy)-19-hydroxy-11,23-dimethoxy-2,4,12,16,18,20,22-heptamethyl-, (2S,16S,17S,18S,19R,20R,21S,22R,23S)- AIDS-014452 AIDS014452 NSC244406