Using CCCCNc1nc(N)nc(C)c1Cc1ccc(CC(=O)OC)cc1O to produce CCCCNc1nc(N)nc(C)c1Cc1ccc(CC(=O)O)cc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.