Using COc1ccc2ncnc(OCC3CCC(=O)CC3)c2c1, NCc1ccccc1 to produce COc1ccc2ncnc(OCC3CCC(NCc4ccccc4)CC3)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.