Using Cn1cc(-c2cn(CO)c3ncnc(N4CCOCC4)c23)cn1 to produce Cn1cc(-c2c[nH]c3ncnc(N4CCOCC4)c23)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.