Using O[C@@H]1CN2CCC1CC2, O=C(O)[C@](O)(c1cccs1)C1CCCC1 to produce O=C(O[C@@H]1CN2CCC1CC2)[C@](O)(c1cccs1)C1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.