1,4,4-Trimethyltricyclo(5.4.0.0(3,5))undec-7-en-9-one 23665-58-9 4H-Cyclopropa(b)naphthalen-4-one, 1,1a,2,5,6,6a,7,7a-octahydro-1,1,6a-trimethyl-, (1aalpha,6abeta,7aalpha)-(-)- TMTCU