Using C1=C(c2ccc(Nc3ncc4c5ccncc5n(C5CCCC5)c4n3)nc2)CCNC1 to produce c1cc2c3cnc(Nc4ccc(C5CCNCC5)cn4)nc3n(C3CCCC3)c2cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.