{HEAD ~ The compounds} or their salts of the invention have {TAIL ~ an excellent somatostatin receptor function} regulating effect, and are not toxic 
have
{ HEAD ~ The compounds } or their salts of the invention have { TAIL ~ an excellent somatostatin receptor function } regulating effect , and are not toxic
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH