Using C=COC(=O)N1CC2C(C1)S(=O)(=O)CCC2(c1ccccc1)c1ccccc1 to produce O=S1(=O)CCC(c2ccccc2)(c2ccccc2)C2CNCC21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.