Complex sentence: The inner sanctuary contains a shrine to the "trikaya", a triad of the Buddhas Vairocana, Sakyamuni and Rocana, whose statues are Treasure 1548 and paintings are Treasure 1363.
Split into simpler sentences: The inner sanctuary contains a shrine to the "trikaya", a triad of the Buddhas Vairocana, Sakyamuni and Rocana. The altar statues of the shrine are Treasure 1548 and the altar paintings are Treasure 1363.