Using O=C=NCc1ccccc1, CC1(C)CCN(C(=O)Nc2ccccc2)c2cc(C#N)ccc21 to produce CC1(C)CCN(C(=O)NCc2ccccc2)c2cc(C#N)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.