Using O=C1CCC2(CC1)OCCO2, CC1(C)COC(c2ccc(Br)cc2)=N1 to produce CC1(C)COC(c2ccc(C3(O)CCC4(CC3)OCCO4)cc2)=N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.