Using O=C(C=C(Nc1ccccc1)Nc1ccccc1)c1ccc(Cl)nc1Cl to produce O=C1CC(Nc2ccccc2)N(c2ccccc2)c2nc(Cl)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.