(1′R,2R,4′S,5S,6S,8′R,13′R,20′R,21′R,24′S)-6-[(2E)-2-Buten-2-yl]-21′,24′-dihydroxy-5,11′,13′,22′-tetramethyl-3,4,5,6-tetrahydro-2′H-spiro[pyran-2,6′-[3,7,19]trioxatetracyclo[15.6.1.1~4,8~.0~20,24~]pen tacosa[10,14,16,22]tetraen]-2′-one

(1′R,2R,4′S,5S,6S,8′R,13′R,20′R,21′R,24′S)-6-[(2E)-2-Buten-2-yl]-21′,24′-dihydroxy-5,11′,13′,22′-tetramethyl-3,4,5,6-tetrahydro-2′H-spiro[pyran-2,6′-[3,7,19]trioxatetracyclo[15.6.1.1~4,8~.0~20,24~]pen tacosa[10,14,16,22]tetraen]-2′-one

112125-00-5

Milbemycin B, 5-O-demethyl-28-deoxy-6,28-epoxy-25-(1-methyl-1-propenyl)-, (6R,25S(E))-