Using O=C(O)C1=CC2=CCCC=C2Sc2c1ccc1c2C(=O)CC1 to produce O=C(O)C1=CC2=CCCC=C2Sc2c1ccc1c2C(O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.