Using O=C1c2ccccc2C(O)N1c1ccccc1, O=c1cc(O)c2ccccc2o1 to produce O=C1c2ccccc2C(c2c(O)c3ccccc3oc2=O)N1c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.