Using CC1c2c(ccc3[nH]cc(Cl)c23)OCCN1C(=O)OC(C)(C)C, O=S(=O)(Cl)c1ccccc1 to produce CC1NCCOc2ccc3c(c(Cl)cn3S(=O)(=O)c3ccccc3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.