PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11595217-5 2001 Acetylated methyl esters of the C-7 and C-8 isomeric nonulosonic acids were prepared and used for analysis of the side-chain conformation by NMR spectroscopy. methyl esters 11-24 complement C7 Homo sapiens 32-35