Using CCOC(=O)c1c(C)cc(OCc2ccccc2)cc1OCCCc1ccccc1 to produce Cc1cc(OCc2ccccc2)cc(OCCCc2ccccc2)c1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.