Using O=C(CN1C2=NCCCN2c2ccccc21)c1ccc(Cl)cc1 to produce OC(CN1C2=NCCCN2c2ccccc21)c1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.