2,6-Bis[(4R)-phenyl-2-(oxazolin-2-yl)]pyridine(R,R)-2,6-双(4-苯基-2-噁唑啉基)吡啶2,6-双[(4R)-4-苯基-2-噁唑啉基]吡啶(R,R)-2,6-Bis(4-phenyl-2-oxazolinyl)pyridine(R,R)-2,6-双(4,5-二氢-4-苯基-2-噁唑基)吡啶(R,R)-2,6-Bis(4,5-dihydro-4-phenyl-2-oxazolyl)pyridine2,6-Bis[(4R)-4-phenyl-2-oxazolinyl]pyridine