Hi,

I want to work with N-acetyl-D-glucosamine. The c36 toppar for carbohydrates has three entries for NAG(GlcNac).
1. AGLCNA
2. BGLCNA
3. BGLCN0

How can I know which molecule to use, if I have to compare with a GlcNac molecule from ZINC15 database?

Thanks,
Nirmitee