Using CCOC(=O)C(C(=O)OCC)C(c1ccc(OC)c(OC)c1)C(OCC)OCC to produce CCOC(OCC)C(CC(=O)O)c1ccc(OC)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.