Using CCI, CCOC(=O)Cc1ccc(N2C(=O)c3c(c(O)c4ccccc4c3O)C2=O)c(Cl)c1 to produce CCOC(=O)Cc1ccc(N2C(=O)c3c(c(OCC)c4ccccc4c3O)C2=O)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.