The present invention provides a copolymer of a conjugated diene compound and a non-conjugated olefin, in which the conjugated diene unit has cis-1,4 bonds and the non-conjugated olefin contains many ethylene structures. In general, the methods include contacting the 5 untranslated region of an RNA in the cell with a cell permeable, small molecule. The resultant co-crystals can have several uses as disclosed herein. The plurality of equalizer responses is provided to the RF filter on a signaling processing path, thus affecting the RF filter’s pass-band ripple. One session application record can be associated with another session application record by using a relation.