Using CCOC(=O)c1cc(OCC)c2c(c1)C(=O)c1cccc(OCC)c1C2=O to produce CCOc1cccc2c1C(=O)c1c(OCC)cc(C(=O)O)cc1C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.