Using Nc1nc(Cl)c2[nH]cnc2n1, O=C(OCCOCCOCCl)c1ccccc1 to produce Nc1nc(Cl)c2ncn(COCCOCCOC(=O)c3ccccc3)c2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.