Using CCNC(=O)Nc1nc2c(s1)-c1nc(-c3cccnc3)sc1CC2 to produce CCNC(=O)Nc1nc2ccc3sc(-c4cccnc4)nc3c2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.