Using CNC=O, CCN(CC)CCCNc1ccc(C=O)c2sc3ccccc3c(=O)c12 to produce CCN(CC)CCCNc1ccc(CNC)c2sc3ccccc3c(=O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.