Using Cc1cnc(N)s1, O=C(O)c1ccn2c(=O)c3c(nc2c1)CCCCCC3 to produce Cc1cnc(NC(=O)c2ccn3c(=O)c4c(nc3c2)CCCCCC4)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.