Using CCOC(=O)CC1(O)CC2CCC1(CS(=O)(=O)N1CCC3(C=Cc4ccccc43)CC1)C2(C)C to produce CC1(C)C2CCC1(CS(=O)(=O)N1CCC3(C=Cc4ccccc43)CC1)C(O)(CC(=O)O)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.