Using COCc1cc(-c2nc(-c3cccc(COCC(=O)OC(C)(C)C)c3)no2)ccc1-c1ccccc1C to produce COCc1cc(-c2nc(-c3cccc(COCC(=O)O)c3)no2)ccc1-c1ccccc1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.