Using Clc1ncnc2scc(-c3nccs3)c12, CNC(=O)c1ccc(OCCCN)cn1 to produce CNC(=O)c1ccc(OCCCNc2ncnc3scc(-c4nccs4)c23)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.