15515-44-3 5-20-01-00209 (Beilstein Handbook Reference) BRN 4019860 Pyrrolidine, 1,1'-((1,2-dimethylethylene)bis(p-phenyleneoxyethylene))di-, meso- meso-1,1'-((1,2-Dimethylethylene)bis(p-phenyleneoxyethylene))dipyrrolidine