Using CCCn1c(N)c(NC(=O)C(C)Cc2ccc(NCC(=O)OC(C)(C)C)cc2)c(=O)n(CCC)c1=O to produce CCCn1c(=O)c2nc(C(C)Cc3ccc(NCC(=O)O)cc3)[nH]c2n(CCC)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.