Using COc1cccc(CNc2nc(Nc3cccc(OC)c3)ncc2Cl)c1 to produce Oc1cccc(CNc2nc(Nc3cccc(O)c3)ncc2Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.