NC122893
3H-5,8-Epoxy-2,4:13,16-dimethano-3,1-metheno-16H,18H-pyrimido[1,6-c][1,3,6,8,14]oxatetraazacyclooctadecine-11,18,20,24(12H,19H)-tetrone, 5,6,7,8,9,10,13,14,21,21a-decahydro-7,21-dihydroxy-14-(hydroxymethyl)-21,25-methyl-, (5R,7S,8R,13R,14S,16R,21R,21aS)-
415927-17-2