Using Nc1cccc(Nc2cc(Cl)ncn2)n1, Oc1ccc2c(c1)OCCO2 to produce Nc1cccc(Nc2cc(Oc3ccc4c(c3)OCCO4)ncn2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.