Tacrolimus

(2-propenyl)-,(3s-(3r*(e(1s*,3s*,4*),4s*,5r*,8s*,9e,12r*,14r*,15s*,16r*,18s*;,19s*.26ar*)-;16-dimethoxy-4,10,12,18-tetramethy-8-3-(2-(4-hydroxy-3-methoxycyclohexyl)-1;19-epoxy-3h-pyrido(2,1-c)(1,4)Oxaazacyclotricosine-1,7,20,21(4h,23h)-tetrone,5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-5,19-dihydroxy-3-(2-(4-hydroxy-3-methoxycyclohexyl)-14,16-dim6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-5,19-d ihydroxy-5;fr900506;proaraf:tsukubaenolide