Using O=C(CCCCCCOc1ccc(OCc2ccccc2)cc1)c1nnc(COCc2ccccc2)o1 to produce O=C(CCCCCCOc1ccc(O)cc1)c1nnc(COCc2ccccc2)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.