Using CC(C)(C)C(=O)Nc1cnc(NCC2CCCCC2)c(CC(=O)O)c1, CO to produce COC(=O)Cc1cc(NC(=O)C(C)(C)C)cnc1NCC1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.