penilactone D + H(+) => (S)-5-carboxymethyl-tetronate + o-quinone methide
penilactone d + h(+) => (s)-5-carboxymethyl-tetronate + o-quinone methide
penilactone D + H(+) => (S)-5-carboxymethyl-tetronate + o-quinone methide
penilactone d + h(+) => (s)-5-carboxymethyl-tetronate + o-quinone methide