preferred_name: peniphenone D => (R)-5-methyl-tetronate + o-quinone methide
preferred_name_lc: peniphenone d => (r)-5-methyl-tetronate + o-quinone methide
label: peniphenone D => (R)-5-methyl-tetronate + o-quinone methide
label_lc: peniphenone d => (r)-5-methyl-tetronate + o-quinone methide