Using CCOC(=O)c1cc(-c2c(OC)cc(OC)cc2OC)cc(C(=O)OCC)n1 to produce CCOC(=O)c1cc(-c2c(OC)cc(OC)cc2OC)cc(CO)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.