CAS No:1210022-90-4||Chemical Formula:C43H51N3O12||Molecular Weight:801.8900||Exact Mass:801.34727||(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-5,6,21,23-trihydroxy-16-(hydroxymethyl)-27-methoxy-2,4,11,20,22,24,26-heptamethyl-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(16-desmethyl-16-(hydroxymethyl)rifaximin)