Linagliptin

Chemical Name: (R)-8-(3-aminopiperidin-1-yl)-7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione; ONDERO; Tradjenta; Trazenta; 1H-Purine-2,6-dione, 8-[(3R)-3-amino-1-piperidinyl]-7-(2-butynyl)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]- (9CI);

Smile: O=C(N(C)C(N=C(N1CCC[C@@H](N)C1)N2CC#CC)=C2C3=O)N3CC4=NC5=CC=CC=C5C(C)=N4