Using O=C(O)[C@@H](O)c1ccccc1, NCC12CC3CC(CC(C3)C1)C2 to produce O=C(NCC12CC3CC(CC(C3)C1)C2)[C@@H](O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.