label: 2-furan-3-yl-2-methoxy-3a,4-dimethyl-8-triethylsilanyloxy-3,3a,4,5,9,10-hexahydro-2H,8H-1-oxacyclopenta(d)naphthalen-6-one
label_lc: 2-furan-3-yl-2-methoxy-3a,4-dimethyl-8-triethylsilanyloxy-3,3a,4,5,9,10-hexahydro-2h,8h-1-oxacyclopenta(d)naphthalen-6-one