CCC(C)C1NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(C(C)C)NC1=O	3-butan-2-yl-9-(2-methylpropyl)-6,12-di(propan-2-yl)-1,4,7,10-tetrazacyclododecane-2,5,8,11-tetrone