  We detected with the IRAM interferometer the lines of CO(4-3) and CO(9-8)
from the recently-discovered broad absorption line quasar APM 08279+5255. The
molecular lines are at a redshift of 3.911, which we take to be the true
cosmological redshift of the quasar's host galaxy. This means the quasar
emission lines at z=3.87 are blueshifted by a kinematic component of -2500
km/s, and, along with the broad absorption lines, are probably emitted in the
quasar's wind or jet, moving toward us. The CO line ratios suggest the
molecular gas is at a temperature of about 200 K, at a density of about 4000
cm^-3. We also detected the dust emission at 94 and 214 GHz (emitted
wavelengths 650 and 290 microns). The spectral index of the mm/submm continuum
is +3.2, indicating the dust emission is optically thin in this part of the
spectrum. The extremely high CO and dust luminosities suggest magnification by
gravitational lensing. Using the optical extent and our limit on the size of
the CO region, we estimate a magnification of 7 to 30 for the CO lines and the
far-IR continuum, and 14 to 60 for the optical/UV. In this interpretation, the
molecular gas and dust is in a nuclear disk of radius 90 to 270 pc around the
quasar. The quasar is 25 to 100 times stronger than, but otherwise resembles,
the nucleus of Mrk 231.
