Using CC#N, Clc1nc(N2CCOCC2)c2sc(N3CCOCC3)nc2n1 to produce Nc1ncc(-c2nc(N3CCOCC3)c3sc(N4CCOCC4)nc3n2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.