Chemical Name: Tert-butyl 4-(6-((6-(1-butoxyvinyl)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)amino)pyridin-3-yl)piperazine-1-carboxylate
Synonym: Palbociclib PBB II Impurity
Smile: CCCCOC(C1=C(C)C2=C(N(C3CCCC3)C1=O)N=C(NC4=CC=C(N5CCN(C(OC(C)(C)C)=O)CC5)C=N4)N=C2)=C