dietil N-5-[2-((6S)-2-amino-4-okso-4,6,7,8-tetrahidro-3H-pirimido[5,4-b][1,4]tiazin-6-il)etil]-2-tenoil-L-glutamat
difenylmetyl (7R)-7-(2-2-[(terc-butoxykarbonyl)amino]-1,3-tiazol-4-yl-2- [(trityloxy)imino]acetamido)-3-([(1H-1,2,3-triazol-4-yl)sulfanyl]metylsulfanyl)-3,4-didehydrocefam-4-karboxylát