Synthesis and in vitro Evaluation of (S)‐2‐([11C]Methoxy)‐4‐ [3‐methyl‐1‐(2‐piperidine‐1‐yl‐phenyl)‐butyl‐carbamoyl]‐benzoic Acid ([11C]Methoxy‐repaglinide): A Potential β‐Cell Imaging Agent.