Using O=C(O)CC12CC3CC(CC(C3)C1)C2, Nc1ccc(O)cc1O to produce O=C(CC12CC3CC(CC(C3)C1)C2)Nc1ccc(O)cc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.