PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
27773949-4	2016	The key step in the synthesis is oxidative olefin cleavage of delta-tocotrienol to afford the chroman core of 1 with retention of chirality at the C-2 stereocenter.	Alkenes	43-49	complement C2	Homo sapiens	147-150