In the anti-time future, the USS Pasteur (NCC-58925) was a Federation Olympic-class hospital ship that was in service with Starfleet in the late 24th century. The Pasteur was constructed by the Skywalker Division at the Marin County Starfleet Yards, and was commanded by Captain Beverly Picard.
The ship was destroyed by two Klingon attack cruisers after the Pasteur crossed the Klingon border to scan the Devron system for a temporal anomaly. However, the survivors of the attack were rescued beforehand by the USS Enterprise-D, under the command of Admiral William T. Riker. Among the Pasteur's crew of that timeline was Ensign Nell Chilton, who died during the Klingon attack. (TNG: "All Good Things...")