N-({[(3R)-1-[7-(but-2-ynyl)-3-methyl-1-[(4-methylquinazolin-2-yl)methyl]-2,6-dioxopurin-8-yl]hexahydropyridin-3-yl]amino}carbonyl)-2-[(3R)-3-aminohexahydropyridin-1-yl]-1-(but-2-ynyl)-4-(methylamino)-N-[(4-methylquinazolin-2-yl)methyl]imidazole-5-carboxamide