Using COc1cccc2c1CC(=O)c1cc(C(C)C(N)=O)ccc1S2, CCO to produce COc1cccc2c1CC(=O)c1cc(C(C)C(=O)O)ccc1S2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.