Minocycline Impurity 20

Chemical Name: (4S,4aS,5aR,12aS)-9-(2-(tert-butylamino)acetamido)-4,7-bis(dimethylamino)-3,10,12a-trihydroxy-12-imino-1,11-dioxo-1,4,4a,5,5a,6,11,11a,12,12a-decahydrotetracene-2-carboxamide

Smile: OC1=C(C(N)=O)C([C@@]2(O)C(C3C(C4=C(O)C(NC(CNC(C)(C)C)=O)=CC(N(C)C)=C4C[C@@]3([H])C[C@@]2([H])[C@@H]1N(C)C)=O)=N)=O