Using O=CC(CC(=O)O)NC(=O)Cn1c(-c2ccccc2)ccc(NC(=O)CCc2ccccc2)c1=O to produce O=CC(CC(=O)O)NC(=O)Cn1cccc(NC(=O)CCc2ccccc2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.