40819-81-6 6-alpha-7beta-Dihydroxyvouacapan-17-beta-oate Phenanthro(3,2-b)furan-7-carboxylic acid, 1,2,3,4,4a,5,6,6a,7,11,11a,11b-dodecahydro-5,6-dihydroxy-4,4,11b-trimethyl-, (4aS-(4aalpha,5alpha,6beta,6abeta,7beta,11aalpha,11bbeta))- Vouacapan