Using O=C1CCC(=O)O1, c1ccc2c(c1)Cc1ccccc1-2 to produce O=C(O)CCC(=O)c1ccc2c(c1)Cc1cc(C(=O)CCC(=O)O)ccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.