6H-​Thieno[3,​2-​f]​[1,​2,​4]​triazolo[4,​3-​a]​[1,​4]​diazepine-​6-​acetamide, 4-​(4-​chlorophenyl)​-​N-​[2-​[[2-​(2,​6-​dioxo-​3-​piperidinyl)​-​2,​3-​dihydro-​1,​3-​dioxo-​1H-​isoindol-​4-​yl]​amino]​ethyl]​-​2,​3,​9-​trimethyl-​, (6S)​-