2,7-(epoxy[1,11,13]pentadecatrienoimino)naphtho[2,1-b]furan-1,6,9,11(2H)-tetrone, 21-(acetyloxy)-5,17,19-trihydroxy-8-[4-(hydroxyimino)-1-piperidinyl]-23-methoxy-2,4,12,16,18,20,22-heptamethyl-, (2S,16S,17S,18R,19R,20R,21S,22R,23S)- AIDS-114449 AIDS114449