Using O=C(O)c1ccncc1, NC1=NS(=O)(=O)Nc2cccc(OCC3(N)CCCC3)c21 to produce NC1=NS(=O)(=O)Nc2cccc(OCC3(NC(=O)c4ccncc4)CCCC3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.