Using Nc1ccc(N2CCOCC2)cn1, CN(c1ccccc1-c1ccc2cnc(S(C)=O)nn12)S(C)(=O)=O to produce CN(c1ccccc1-c1ccc2cnc(Nc3ccc(N4CCOCC4)cn3)nn12)S(C)(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.