Using CCCCc1nc(Cl)c(C(=O)OCC)n1Cc1ccc(C2(C(=O)OCC)CC=CC2)s1 to produce CCCCc1nc(Cl)c(C(=O)O)n1Cc1ccc(C2(C(=O)O)CC=CC2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.