Using COc1ccc(OC)cc1, COc1cccc2c1C(=O)OC2=O to produce COc1ccc(OC)c(C(=O)c2cccc(OC)c2C(=O)O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.