2,7-(Epoxy[1,11,13]pentadecatrienoimino)-6H-benzofuro[4,5-a]phenoxazine-1,6,15(2H)-trione, 25-(acetyloxy)-5,12,21,23-tetrahydroxy-27-methoxy-2,4,16,20,22,24,26-heptamethyl-10-[4-(2-methylpropyl)-1-piperazinyl]-, (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)- AIDS-218290 AIDS218290 KRM-1648 and Yokuinin