Linagliptin Impurity 45

Chemical Name: (R,E)-8-(3-aminopiperidin-1-yl)-7-(4-hydroxy-3-methylbut-2-en-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione

Smile: CC1=NC(CN2C(N(C)C(N=C(N3C[C@H](N)CCC3)N4C/C=C(C)/CO)=C4C2=O)=O)=NC5=CC=CC=C51