preferred_name: [(1R)-2,2,3-trimethyl-5-oxocyclopent-3-en-1-yl]acetate + H(+) => (1R,4R)-5-oxo-1,2-campholide
preferred_name_lc: [(1r)-2,2,3-trimethyl-5-oxocyclopent-3-en-1-yl]acetate + h(+) => (1r,4r)-5-oxo-1,2-campholide
label: [(1R)-2,2,3-trimethyl-5-oxocyclopent-3-en-1-yl]acetate + H(+) => (1R,4R)-5-oxo-1,2-campholide
label_lc: [(1r)-2,2,3-trimethyl-5-oxocyclopent-3-en-1-yl]acetate + h(+) => (1r,4r)-5-oxo-1,2-campholide