(2'S,5'S,6S,7S,5aβ)-2',8α-Diacetoxy-5'-(3-furyl)-7α-methyl-3,4,4',5,5',5a,7,8-octahydrospiro[6H-naphtho[1,8-bc]furan-6,3'(2'H)-furan] | (2'S,5'S,6S,7S,5aβ)-2',8α-Diacetoxy-5'-(3-furyl)-7α-methyl-3,4,4',5,5',5a,7,8-octahydrospiro[6H-naphtho[1,8-bc]furan-6,3'(2'H)-furan] | |