Using O=C(Nc1c(C(=O)Nc2ccc(Cl)cc2)ncn1Cc1ccccc1)c1ccc(Cl)cc1Cl to produce O=c1c2ncn(Cc3ccccc3)c2nc(-c2ccc(Cl)cc2Cl)n1-c1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.