Using CC1(C23CC4CC2CC(CN2CCCS2(=O)=O)(C4)C3)OCCO1 to produce CC(=O)C12CC3CC1CC(CN1CCCS1(=O)=O)(C3)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.