2,6-ditert-butyl-4-[(3,5-ditert-butyl-4-hydroxyphenyl)-[3-methyl-4-[(E)-prop-1-enyl]phenyl]methylidene]cyclohexa-2,5-dien-1-one;2,6-ditert-butyl-4-[2-[4-(3,5-ditert-butyl-4-hydroxyphenyl)-5-methylthiophen-2-yl]-5-methylthiophen-3-yl]phenol;2,6-ditert-butyl-4-(2,5-dimethylthiophen-3-yl)phenol;2,6-ditert-butyl-4-[1-[4-(4-methylanilino)phenyl]ethyl]phenol;2,6-ditert-butyl-4-(5-methyl-2-prop-1-ynylthiophen-3-yl)phenol