Using CCN(CC)C(=O)c1cccc2c(CC(=O)OC)c[nH]c12, CO to produce CCN(CC)C(=O)Cc1cccc2c(CCO)c[nH]c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.