Using O=C1C=CC=C2C1=Cc1ccccc12, [OH-] to produce O=C(O)C1=C2C(=Cc3ccccc32)C2(C=CC=C3C2=Cc2ccccc23)C=C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.