E26 e26 (4~{S},5~{R},6~{Z},9~{S},10~{S},12~{E})-16-(ethylamino)-4,5-dimethyl-9,10,18-tris(oxidanyl)-3-oxabicyclo[12.4.0]octadeca-1(14),6,12,15,17-pentaene-2,8-dione E26