Using O=S(Cl)Cl, OCCN1CCC(Nc2nc3ccccc3n2Cc2ccc(F)cc2)CC1 to produce Fc1ccc(Cn2c(NC3CCN(CCCl)CC3)nc3ccccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.