Using CCc1cccc(Oc2ccc(C3=CC=CN4CCS(=O)(=O)N=C34)cc2)c1 to produce CCc1cccc(Oc2ccc(C3CCCN4CCS(=O)(=O)N=C34)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.