Formosal

Tsugacetal

Formosanol

(1S,3aR)-1β,7-Dimethoxy-4β-(3-methoxy-4-hydroxyphenyl)-1,3,3aβ,4,9,9aα-hexahydronaphtho[2,3-c]furan-6-ol

(1S,3aR,4S,9aR)-1,3,3a,4,9,9a-Hexahydro-4-(4-hydroxy-3-methoxyphenyl)-1,7-dimethoxynaphtho[2,3-c]furan-6-ol