Using OB(O)c1ccc2[nH]ccc2c1, CCOC(=O)c1cn[nH]c1 to produce CCOC(=O)c1cnn(-c2ccc3[nH]ccc3c2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.