Using O=C(O)c1cccc2c1CCCC2, CCOC(=O)C1(N)[C@H](C)c2ccccc2[C@@H]1C to produce CCOC(=O)C1(NC(=O)c2cccc3c2CCCC3)[C@H](C)c2ccccc2[C@@H]1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.