Lymecycline EP Impurity A

Chemical Name: 4-epi-Tetracycline Hydrochloride ; (4R,4aS,5aS,6S,12aS)-4-(dimethylamino)-3,6,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide (4-epitetracycline),

Smile: O=C(C1=C(O)[C@H](N(C)C)[C@@](C[C@@]2([H])C(C(C3=C(O)C=CC=C3[C@]2(O)C)=O)=C4O)([H])[C@@]4(O)C1=O)N.Cl