Using COC(=O)COc1ccc(C(=O)c2ccc(OC)cc2)cc1C to produce COc1ccc(C(=O)c2ccc(OCC(=O)O)c(C)c2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.