Using O=P(Cl)(Cl)Cl, O=C(O)c1ccccc1Nc1ccnn1-c1ccccn1 to produce Clc1c2ccccc2nc2c1cnn2-c1ccccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.