2(R)-(2-Aminothiazol-4-ylmethyl)-N4-(cyclohexylmethyl)-N1-[1(S)-(cyclohexylmethyl)-2(R),3(S)-dihydroxy-5-methylhexyl]-N4-[N-methyl-N-[2-(2-pyridyl)ethyl]carbamoylmethyl]succinamide