Using CCN=C=NCCCN(C)C, COc1ccc(Nc2nc(-c3ccc(C(=O)O)cc3)nc3scnc23)cc1OC to produce COc1ccc(Nc2nc(-c3ccc(C(N)=O)cc3)nc3scnc23)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.