Using O=C1CCC(=O)O1, O=C(O)c1cccc2c1-c1ccccc1C2 to produce O=C(O)CCC(=O)c1ccc2c(c1)Cc1cccc(C(=O)O)c1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.