Using O=C(O)c1cccc2c1CCCC2, CCOC(=O)C1(N)Cc2c(C)sc(C)c2C1 to produce CCOC(=O)C1(NC(=O)c2cccc3c2CCCC3)Cc2c(C)sc(C)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.