135635-47-1 15,19-Epoxy-3H-pyrido(2,1-c)(1,4)oxaazacyclotricosine-1,7,20,21(4H,23H)-tetrone, 3-(2-(3,4-dihydroxycyclohexyl)-1-methylethenyl)- 5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-5,19-dihydroxy-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(2-propenyl)- 31-O-Demethyl-FK-506 31-O-Demethyl-FK506