Using CCOC(=O)Cc1cn(CCc2ccc(OCc3ccccc3)cc2)nc1-c1ccccc1 to produce CCOC(=O)Cc1cn(CCc2ccc(O)cc2)nc1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.