Chemical Name: tert-butyl 2-((4R,6R)-6-(2-(2-isopropyl-4,5-diphenyl-3-(phenylcarbamoyl)-1H-pyrrol-1-yl)ethyl)-2,2-dimethyl-1,3-dioxan-4-yl)acetate
Synonym: Betamethasone EP Impurity B
Smile: O=C(OC(C)(C)C)C[C@@H]1OC(C)(C)O[C@H](CCN2C(C(C)C)=C(C(NC3=CC=CC=C3)=O)C(C4=CC=CC=C4)=C2C5=CC=CC=C5)C1