Using NCCN1CCOCC1, CN(C)c1nc2nc3c(c(Cl)n2n1)SCCC3 to produce CN(C)c1nc2nc3c(c(NCCN4CCOCC4)n2n1)SCCC3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.