Assuming you have calculated the liability correctly then there is little or nothing you can do.
Some schemes such as the Radisson the scheme are tailored to give the client relief against all income. However, I'm not aware of any scheme that provides for CAT relief. Maybe you should look at maximising your Income Tax relief and offset against the CAT liability. Look at Film relief, it'll generate about €2,000 relief for nothing. Then you have a pension contribution, I don't know what age you are but this is more effective as you get older in life. Remember while you are paying out on a pension fund now you'll be entitled to a 25% tax-free lump sum out of the fund on maturity. I think FA 2006 put some cap on this... Maybe €1.5 Million?
Then you have BES relief, this is highly volatile at the moment. I wouldn't invest in anything BES related unless it's asset backed, look at something with a 10%-15% yield but with good asset backing.
Then you have a Deed of Covenant, if you are giving money to someone 65 years or over or and incapacitated individual then you will get tax relief on it. Again this is a small saving as a Deed of Covenant is capped at 5% of your annual income.
€95,000 of a CAT liability is big, that's giving you a gain of €475,000 after you've used the appropriate threshold. Are you entitled to dwelling house relief or anything like this? Is the will set in stone?