Using CC(C)(OCc1nn(Cc2ccccc2)c2ccccc12)C(=O)O, CO to produce COC(=O)C(C)(C)OCc1nn(Cc2ccccc2)c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.