Pimecrolimus
chemical name:(3S, 4R, 5S, 8R, 9E, 12S, 14S, 15R, 16S, 18R, 19R, 26aS) -3-{(E)-2-[(1R, 3R, 4S)-4-Chloro-3 -methoxycyclohexyl]-1-methylvinyl} -8-ethyl-5, 6, 8, 11, 12, 13, 14, 15, 16, 17, 18 , 19, 24, 25, 26, 26a-hexadecahydro -5, 19-dihydroxy-14, ...