Using CN1C(=O)C2(COc3cc4c(cc32)OCCO4)c2c(Br)cccc21, COc1ccc(O)cc1 to produce COc1ccc(Oc2cccc3c2C2(COc4cc5c(cc42)OCCO5)C(=O)N3C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.