Using COc1cc2ncnc(N3CCC(CN4CCCNS4(=O)=O)CC3)c2cc1OC, CC(C)I to produce COc1cc2ncnc(N3CCC(CN4CCCN(C(C)C)S4(=O)=O)CC3)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.