Rifamycin Impurity 1

Chemical Name: 21-Acetate, Spiro[1,3-dioxolane-2,9′(6′H)-[2,7](epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan]-1′,4,6′,11′,17′(2′H)-pentone, 5′,16′,19′,21′-tetrahydroxy-23′-methoxy-2′,4′,12′,16′,18′,20′,22′-heptamethyl

Smile: O=C(/C(C)=C\C=C\[C@](O)(C)C([C@@H](C)[C@@H](O)[C@@H](C)[C@@H]([C@H](C)[C@@H](OC)/C=C/O[C@@]1(C)O2)OC(C)=O)=O)NC3=CC4(OCC(O4)=O)C5=C(C3=O)C(O)=C(C)C2=C5C1=O