Using CCOc1ccc(-c2nc(CC(C(=O)OC)C(=O)c3ncccc3C)co2)cc1OCC to produce CCOc1ccc(-c2nc(CCC(=O)c3ncccc3C)co2)cc1OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.