Using CCOC(=O)CCCn1c(C(=O)OCC)cc2cc(OCc3ccccc3)ccc21 to produce CCOC(=O)C1=C(O)c2cc3cc(OCc4ccccc4)ccc3n2CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.