Using Brc1ncccn1, C#Cc1cc2c(cc1C=O)C(C)(C)CCC2(C)C to produce CC1(C)CCC(C)(C)c2cc(C=O)c(C#Cc3ncccn3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.