Using CN(C)C=O, CC1(C)CCSc2ccc(C#Cc3ccc(Br)cn3)cc21 to produce CC1(C)CCSc2ccc(C#Cc3ccc(C=O)cn3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.