label: 2,3-diacetyl-3 alpha,5,6,6 alpha-tetrahydro-6 alpha-hydroxy-2,3 alpha,5-trimethylfuro(2,3-d)-1,3-dioxile
label_lc: 2,3-diacetyl-3 alpha,5,6,6 alpha-tetrahydro-6 alpha-hydroxy-2,3 alpha,5-trimethylfuro(2,3-d)-1,3-dioxile