Rifabutin N-Oxide Open Ring

Smile: OC1=C2C(C3=NC4(CC[N+]([O-])(CC(C)C)CC4)NC3=C(NC(/C(C)=C\C=C\[C@H](C)[C@H](O)[C@@H](C)[C@@H](O)[C@@H](C)[C@H](OC(C)=O)[C@H](C)[C@@H](OC)/C=C/O[C@](O)(C)C5=O)=O)C2=O)=C5C(O)=C1C