PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
31806538-0	2020	Structural optimization of aminopyrimidine-based CXCR4 antagonists.	2-aminopyrimidine	27-42	C-X-C motif chemokine receptor 4	Homo sapiens	49-54	
31806538-1	2020	Structural optimization of aminopyrimidine-based CXCR4 antagonists is reported.	2-aminopyrimidine	27-42	C-X-C motif chemokine receptor 4	Homo sapiens	49-54	
29494843-2	2018	Through scaffold hybridization of a few known CXCR4 antagonists, a series of novel aminopyrimidine derivatives was developed.	2-aminopyrimidine	83-98	C-X-C motif chemokine receptor 4	Homo sapiens	46-51