(2S,20S,21S,22R,23R,24R,25S,26R,27S)-5,6,12,21,23-Pentahydroxy-10-(4-isobutyl-1-piperazinyl)-27-methoxy-2,4,16,20,22,24,26-heptamethyl-1,15-dioxo-1,2-dihydro-13H-2,7-(epoxy[1,11,13]pentadecatrienoimino)[1]benzofuro[4,5-a]phenoxazin-25-yl acetate AIDS-113689 AIDS113689