CAS No:80621-81-4||Chemical Formula:C43H51N3O11||(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)5,6,21,23-Tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-1,15-dioxo-1,2-dihydro-2,7-(epoxypentadeca[1,11,13]trienoimino)[1]benzofuro[4,5-e]pyrido[1,2-a]benzimidazol-25-yl acetate