Using Cc1nc(N)c2ncn(CCCCN)c2c1C, O=C(Cl)N1CCOCC1 to produce Cc1nc(N)c2ncn(CCCCNC(=O)N3CCOCC3)c2c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.