| (1'R,2R,4S,4'S,5S,6S,8'R,13'R,14'Z,16'Z,20'R,21'R,24'S)-4,21',24'-Trihydroxy-5,11',13',22'-tetramethyl-6-[(2Z)-4-methyl-2-penten-2-yl]-3,4,5,6-tetrahydro-2'H-spiro[pyran-2,6'-[3,7,19]trioxatetracyclo[ ;15.6.1.14,8.020,24]pentacosa[10,14,16,22]tetraen]-2'-one |