Using CCC(CC)n1c(C(=O)OC)cc2cnc(Nc3ccc(N4CCN(C(C)=O)CC4)cc3)nc21 to produce CCC(CC)n1c(C(=O)O)cc2cnc(Nc3ccc(N4CCNCC4)cc3)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.