Using COc1cccc(-c2ccc3cc(-c4cccnc4)nc(OCc4ccccc4)c3c2)c1 to produce COc1cccc(-c2ccc3cc(-c4cccnc4)nc(O)c3c2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.