What is the molecular formula of following compound?
\(\mathrm{C}_{6}\mathrm{H}_{6}\mathrm{Cl}_{6}\)
\(\mathrm{C}_{6}\mathrm{Cl}_{6}\)
\(\mathrm{C}_{6}\mathrm{H}_{12}\mathrm{Cl}_{6}\)
\(\mathrm{C}_{6}\mathrm{H}_{3}\mathrm{Cl}_{6}\)