preferred_name: peniphenone D + o-quinone methide + H(+) = penilactone A
preferred_name_lc: peniphenone d + o-quinone methide + h(+) = penilactone a
label: peniphenone D + o-quinone methide + H(+) = penilactone A
label_lc: peniphenone d + o-quinone methide + h(+) = penilactone a