product transform OAS1_0001_MR1_mpr-3_anon_to_711-2C_t4
product=[OAS1_0001_MR1_mpr-3_anon_to_OAS1_0001_MR1_mpr-1_anon_t4][OAS1_0001_MR1_mpr-1_anon_to_711-2C_t4]
t4
 -0.034657 -0.904372  0.257409   -0.7592
 -0.002713  0.268432  0.829069    5.4554
 -0.934273  0.000989 -0.018692    2.3761
  0.000000  0.000000  0.000000    1.0000
scale:      0.910786
