preferred_name: a carotenoid beta-end derivative => a carotenoid psi-end group
preferred_name_lc: a carotenoid beta-end derivative => a carotenoid psi-end group
label: a carotenoid beta-end derivative => a carotenoid psi-end group
label_lc: a carotenoid beta-end derivative => a carotenoid psi-end group