Using CN(CCc1cccc(OCc2ccccc2)c1)c1cnc(-c2ccccc2)c(-c2ccccc2)n1 to produce CN(CCc1cccc(O)c1)c1cnc(-c2ccccc2)c(-c2ccccc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.