N'-((4aS,8aR)-5,8a-dimethyl-4,4a,8,8a-tetrahydro-1H-spiro[naphthalene-2,2'-[1,3]dioxolan]-7(3H)-ylidene)-4-methylbenzenesulfonohydrazide

(4'aR,8'aR)-5',8'a-dimethyl-3',4',4'a,7',8',8'a-hexahydro-1'H-spiro([1,3]dioxolane-2,2'-naphthalen-7'-one)