Using O=C(O)c1ccc2c(c1)C(=O)c1ccccc1C2=O, NCCCO to produce O=C(NCCCO)c1ccc2c(c1)C(=O)c1ccccc1C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.