5,7-Di-tert-butyl-3,3-dimethyl-1-thioxo-2,3-dihydro-1H-1λ5-phosphindole-1-thiol; compound with pyridine

1,3,5,2,4,6-Trithiatriphosphorinane,2,4,6-tris[2,4,6-tris(1,1-dimethylethyl)phenyl]-