Using O=C(CBr)c1ccncc1, O=C(O)Cc1ccc(OCc2ccc3ccccc3n2)c(Cl)c1 to produce O=C1OCC(c2ccncc2)=C1c1ccc(OCc2ccc3ccccc3n2)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.