molecular structure of methyl 20-ISOPROPYL- 15(<i>E</i>)-hydroxyimino-5,9-DImethyl-18-oxahexacyclo [12.4.0.2<sup>2,13</sup>.1<sup>18,20</sup>.0<sup>5,10</sup>.0<sup>4,13</sup>]HENEICOSANE-9-carboxylate
Methyl 20-isopropyl-15(E)-hydroxyimino-5,9-dimethyl-18-oxahexacyclo [12.4.0.22,13.118,20.05,10.04,13]-heneicosane-9-carboxylate is synthesized and its molecular structure is determined. Compound IIа of С27H41NO4 crystallizes in the acentric P21 space group with the following unit cell parameters: а = 7.6511(7) Å, b = 12.0698(11) Å, c = 12.9182(12) Å, β = 95.257(2)°.