Evaluation of Synthetic FK506 Analogs as Ligands for the FK506-Binding Proteins 51 and 52: Complex of FKBP51 with 2-(3-((R)-3-(3,4-dimethoxyphenyl)-1-((S)-1-(2-((1R,2S)-2-ethyl-1-hydroxy-cyclohexyl)-2-oxoacetyl)piperidine-2-carbonyloxy)propyl)phenoxy)acetic acid from cocrystallization
