Using CC(C)(C)OC(=O)N1CCC2(CC1)CC(c1ccccc1)N(S(=O)C(C)(C)C)C2=O to produce O=C1NC(c2ccccc2)CC12CCNCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.