an N-acyl-D-glucosamine 6-phosphate = an N-acyl-D-mannosamine 6-phosphate
an n-acyl-d-glucosamine 6-phosphate = an n-acyl-d-mannosamine 6-phosphate
an N-acyl-D-glucosamine 6-phosphate = an N-acyl-D-mannosamine 6-phosphate
an n-acyl-d-glucosamine 6-phosphate = an n-acyl-d-mannosamine 6-phosphate