It's not really your job to understand and check MCT, and on one ticket there is essentially zero risk of not getting to Dublin. I'd let it ride, fail conformance, and get rebooked at the transfer desk, although you may find the system does that for you anyway. There's no real point I can see in hanging on the telephone to sort it out. I agree with KARFA that there's no chance at all of making the flight.

Do have a look at EC261 when the dust settles, depending on what happens.