Using CCCCOc1nc(N)c2[nH]c(=O)n(CCCNCc3ccccc3)c2n1, CC(=O)Cl to produce CCCCOc1nc(N)c2[nH]c(=O)n(CCCN(Cc3ccccc3)C(C)=O)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.