(+)-4-epi-Arbusclin D 145613-48-5 4alpha,12-Dihydroxyeudesm-7(11)-eno-13,6alpha-lactone 4beta,12-Dihydroxyeudesm-7(11)-eno-13,6alpha-lactone Arbusclin D Naphtho(1,2-b)furan-2(4H)-one, 5,5a,6,7,8,9,9a,9b-octahydro-9-hyddroxy-3-(hydroxymethyl)-5a,9-dimethyl-, (5aR-(5aalpha,9alpha,9abeta,9balpha))-