(r)-6-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-n-(3-ethynyl-2-fluorophenyl)-7-methoxyquinazolin-4-amine-
(r)-6-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-n-(3-ethynyl-2-fluorophenyl)-7-methoxyquinazolin-4-amine-