Using CCCCCCNC(=O)n1cc(N(C)Cc2ccccc2)c(=O)[nH]c1=O to produce CCCCCCNC(=O)n1cc(NC)c(=O)[nH]c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.