Using Fc1ncccc1C1CC1, Oc1ccc(Nc2nc3ccccc3s2)cc1 to produce c1cnc(Oc2ccc(Nc3nc4ccccc4s3)cc2)c(C2CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.