Linagliptin Impurity 3

Chemical Name: 7-(But-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-8-(3-((3,4,5,6-tetrahydroxy-2-oxohexyl)amino)piperidin-1-yl)-3,7-dihydro-1H-purine-2,6-dione

Smile: O=C(N1CC2=NC(C)=C3C=CC=CC3=N2)N(C)C4=C(N(CC#CC)C(N5C[C@H](NCC(C(O)C(O)C(O)CO)=O)CCC5)=N4)C1=O