Pimecrolimus

Chemical Name: (3S,4R,5S,8R,9E,12S,14S,15R,16S,18R,19R,26aS)-3-[(1E)-2-[(1R,3R,4S)-4-Chloro-3-methoxycyclohexyl]-1-methyl-ethenyl]-8-ethyl-5,6,8,11,12,13,14,15,16,17,18,19,24,26,26a-hexadecahydro-5,19-dihydroxy-14,16-dimethoxy-4,10,12,18-tetramethyl-15,19-epoxy-3Hpyrido[2,1-c][1,4]oxaazacyclotricosine-1,17,20,21(4H,23H)-tetrone ; 33-Epichloro-33-desoxyascomycin

Synonym: (6S)-6-{[3-methyl-4-(trifluoromethoxy)benzyl]oxy}-2-nitro-6,7-dihydro-5H-imidazzo[2,1-b][1,3]oxazine