Using C1CC2(CCN1)OCCO2, Clc1nc(N2CCOCC2)c2sc(CBr)cc2n1 to produce Clc1nc(N2CCOCC2)c2sc(CN3CCC4(CC3)OCCO4)cc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.