product transform OAS1_0001_MR1_mpr-4_anon_to_711-2C_t4
product=[OAS1_0001_MR1_mpr-4_anon_to_OAS1_0001_MR1_mpr-1_anon_t4][OAS1_0001_MR1_mpr-1_anon_to_711-2C_t4]
t4
 -0.036227 -0.904014  0.258342   -0.7139
 -0.001291  0.269408  0.828528    5.5873
 -0.934354  0.002902 -0.017907    2.5227
  0.000000  0.000000  0.000000    1.0000
scale:      0.911344
