SMILES: CC(C)C[C@H]1C(=O)N[C@H](C(=O)N1)CC(C)C
Description: The molecule is a member of the class of 2,5-diketopiperazines that is piperazine-2,5-dione in which one hydrogen at position 3 and one hydrogen at position 6 are replaced by isobutyl groups (the 3S,6S-diastereomer).