Using CCOCCn1nc(C(=O)OC)c2nc(N(C)CC)nc(Nc3cccc(CC)n3)c21 to produce CCOCCn1nc(C(=O)O)c2nc(N(C)CC)nc(Nc3cccc(CC)n3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.