UTR Library Designer Error

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

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

16s rRNA Sequence : ACCUCCUUA

Desired Expression Range : 100002.55 ~ 1020672.55 ( Desired max expression should be smaller than 1000000 )

Number of expression-level intermediates : 16