Natriuretic factor-45 (rat brain),1-de-L-serine-2-de-L-glutamine-3-de-L-asparticacid-4-de-L-serine-5-de-L-alanine-6-de-L-phenylalanine-7-de-L-arginine-8-de-L-isoleucine-9-de-L-glutamine-10-de-L-glutamicacid-11-de-L-arginine-12-de-L-leucine-13-de-L-arginine-