Using CC#CC(C)(C)NC(=O)C(CC)Oc1cncc(Br)c1, CCCCC([Sn])=C(CCCC)CCCC to produce C=Cc1cncc(OC(CC)C(=O)NC(C)(C)C#CC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.