Using COCC1CCCN1c1cccc(Nc2nc(-c3cccc(C(=O)OC)c3)nc3scnc23)c1 to produce COCC1CCCN1c1cccc(Nc2nc(-c3cccc(C(=O)O)c3)nc3scnc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.