PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 24487188-1 2014 Six novel oleanolic acid ring-A fused hybrids (5-10) have been synthesized by employing a four step protocol with the introduction of benzylidene functionality at C-2 as the key step. Oleanolic Acid 10-24 complement C2 Homo sapiens 163-166