Using NC1CCc2c(ccc(O)c2O)C1=O, COc1ccc(CC=O)cc1 to produce COc1ccc(CCNC2CCc3c(ccc(O)c3O)C2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.