A long time ago I worked on 100% nitric acid and have the scars to prove it. Yes, it was rocket science.
JME Molecule Editor links are dead.
wikipedia says this is cholesterol
but it is too big for Chemicalize
c1ccc2c1cccc2 = 2,3-dihydro-1H-indene
I use Open Babel for drawing molecular structures from SMILES strings.