8abeta,9s*,10s*))-8alph

ne,5-ethenyl-3,4,4a,5,6,7,8,8a-octahydro-7-methyl-,(3r-(3alpha,4abeta,5alpha,

spiro(3,5,8-ethanylylidene-1h-pyrano(3,4-c)pyridine-10,3’-(3h)indol)-2’(1’h)-o

-octahydro-7-methylspiro(3,5,8-ethanylylidene-1h-pyrano(3,4-c)pyridine-10,3’-(