1H-11,14-Methano-2,11,23-methenoazacyclotridecino[4,3-d]azacyclopentadecine,3,4,5,6,9,10,11a,12,13,15,16,17,18,21,22,24a-hexadecahydro-,[11S-(7Z,11R*,11aS*,19Z,24aR*,25S*)]-