Using CCO, CC(C)(C)CC(=O)Nc1ccc2c(c1)cc(C(=O)Nc1ccccc1)n2CC(=O)O to produce CCOC(=O)Cn1c(C(=O)Nc2ccccc2)cc2cc(NC(=O)CC(C)(C)C)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.