Using CI, CCOC(=O)N1CCc2c(nc3ccccc3c2C)C(O)C1 to produce CCOC(=O)N1CCc2c(nc3ccccc3c2C)C(OC)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.