Phenol, 2,2′-[(1R,2R)-1,2-cyclohexanediylbis[(E)-nitrilomethylidyne]]bis[4-(1,1-dimethylethyl)-6-methyl-4-tert-butyl-2-[(E)-{[(1R,2R)-2-[(E)-[(5-tert-butyl-2-hydroxy-3-methylphenyl)methylidene]amino]cyclohexyl]imino}methyl]-6-methylphenol