Complex sentence: In 1998, the building was sold in Philip Pilevsky for $15 million, three years afterwards, American Radiator Building was converted into hotel ("The Bryant Park Hotel") with 130 rooms and a theatre in basement.
Split into simpler sentences: In 1998, the building was sold in Philip Pilevsky for $15 million. Three years afterwards, American Radiator Building was converted into hotel ("The Bryant Park Hotel") with 130 rooms and a theatre in basement.