Crystal and molecular structure of 13-14 dicarboethoxy heptacyclo[10.2.2.15,8.02,6.02,11.04,9.07,11]heptadecane-15-ene 3,10 dione - Dhaneshwar, N. N.; Krishnan, S.; Tavale, S. S.; Zope, U. R.; Pandey, B.; Ayyangar, N. R. (Springer, 1991)
http://dx.doi.org/10.1007/BF01161090
Keywords: TE-TZ; U