Using CC(=O)NC1(c2cccc(Cl)c2)C2=NCCCN2c2ccccc21 to produce NC1(c2cccc(Cl)c2)C2=NCCCN2c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.