0 0 EtO 00 HC-OC2H5 H-CH2CCH3 H20 HC-CH2CCH3 00 Q EtO 000 C2HsO-C-C-OC2Hs H-CH2CCH3 HO C2HsO-C-C-CH2CCH3 00 -CO CHsO-C-CH2CCH3 GaMOOCCC 0 00 HO C2HsO-C-CH2CCH3 ocme cnecna ocn.cm 0 0 4■PU