Using CCOC(C)=O, CCOC(=O)c1cccc(-c2c(OC)cccc2C(=O)O)c1 to produce CCOC(=O)c1cccc(-c2c(OC)cccc2C(=O)OCC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.