Upload a .cif file
All RINs in the uploaded model, annotated by FR3D ,
are returned. The input must be a cif file.
This can take time
 Sarver, Michael, Craig L. Zirbel, Jesse Stombaugh, Ali Mokdad, and Neocles B. Leontis.
"FR3D: finding local and composite recurrent structural motifs in RNA 3D structures."
Journal of mathematical biology 56, no. 1 (2008): 215-252.