Using COc1ccc(Nc2nc(N3CCCC(NC(=O)OC(C)(C)C)C3)nc3scnc23)cc1OC to produce COc1ccc(Nc2nc(N3CCCC(N)C3)nc3scnc23)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.