Using CCCCOc1cc2c(cc1C(=O)OC)CC(N(CCC)CCC)C2, CNC=O to produce CCCCOc1cc2c(cc1C(=O)NC)CC(N(CCC)CCC)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.