Using CCO, O=C(O)Cc1c(C(=O)O)n(-c2cccc(C(=O)O)c2)c2ccccc12 to produce CCOC(=O)Cc1c(C(=O)O)n(-c2cccc(C(=O)O)c2)c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.