IUPAC:(1''S,2R,2'S,5''aR,7''aR,11''aR,11''bR)-4,5,5'',5'',7''a,9'',11''b-heptamethyl-3,3'',5'-trioxo-2'',3'',5'',5''a,6'',7'',7''a,11'',11''a,11''b-decahydro-1''H,3H-dispiro[furan-2,4'-oxolane-2',8''-naphtho[2,1-c]oxepin]-1''-yl acetate
IUPAC:(1''S,2R,2'S,5''aR,7''aR,11''aR,11''bR)-4,5,5'',5'',7''a,9'',11''b-heptamethyl-3,3'',5'-trioxo-2'',3'',5'',5''a,6'',7'',7''a,11'',11''a,11''b-decahydro-1''H,3H-dispiro[furan-2,4'-oxolane-2',8''-naphtho[2,1-c]oxepin]-1''-yl acetate