How does chlorofluorocarbon affects the ozone layer?

The ozone is formed by three atoms of oxygen( 03) which act as a shield in the upper atmosphere to block harmful radiation ... the carbon in CFC has a stronger bond to oxygen than it's bond to CFC so the carbon strips the oxygen from the ozone and that would weaken the ozone shield to block the harmful radiation that cause cancer.. any thing less than three oxygen is not ozone...