Pyrido[2,​3-​d]​pyrimidine-​3(4H)​-​acetamide, 2-​(3-​chloro-​4-​fluorophenyl)​-​N-​(1-​methylethyl)​-​6-​[3-​(4-​morpholinyl)​propoxy]​-​4-​oxo-​, hydrochloride (1:1)