Synonyms: ABI-1657;KRM-1657;(2S,16Z,18E,20S,21S,22R,23R,24S,25S,26S,27S,28E)-5,12,21,23-tetrahydroxy-27-methoxy-2,4,16,20,22,24,26-heptamethyl-1,6,15-trioxo-10-(4-propylpiperazin-1-yl)-1,2-dihydro-6H,13H-2,7-(epoxypentadeca[1,11,13]trienoazeno)[1]benzofuro[4,5-a]phenoxazin-25-yl acetate