UTR Library Designer Error

Template 5'-UTR Sequence (25NT) : GCATTCTTTCACAACANNNNTATAT ,     Additional Constraints for designing 5'-UTR sequence (25NT) : NNNNNNNNNNNNNNNNNNNNTATAT

Protein Coding Sequence (at least N-term 35NT) : ATGAAAAAAATAACAGGGATTATTTTATTGCTTCT

16s rRNA Sequence : ACCUCCUUA

Desired Expression Range : 100000.00 ~ 5000000.00 ( Desired max expression should be smaller than 1000000 )

Number of expression-level intermediates : 32