Octreotide acetate. Molecular model of the drug octreotide acetate (C49.H66.N10.O10.S2?C2.H4.O2). This drug is sold under the brand name Sandostatin LAR. It is used for the treatment of growth hormone producing tumours and pituitary tumours that secrete thyroid stimulating hormone. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white), nitrogen (blue), oxygen (red) and sulfur (yellow).