Using CNCCOc1cccc2ncnc(Nc3ccc(O)c(C)c3)c12, O=C(O)CO to produce Cc1cc(Nc2ncnc3cccc(OCCN(C)C(=O)CO)c23)ccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.