4(S)-benzyl-3-[9(S),11(S)-bis(tert-butyldimethylsilanyloxy)-5(R)-(4-methoxybenzyloxy)-2(S),4(S),6(S),12(S)-tetramethyl-15-trityloxy-pentadeca-7,13-dienoyl]oxazolidin-2-one

13(S),15(S)-bis(tert-butyldimethylsilanyloxy)-2(S)-[2(S)-(4-methoxyphenyl)-5(S)-methyl[1,3]dioxan-4(S)-yl]-9(R)-(4-methoxybenzyloxy)-6(R),8(S),10(S),16(S)-tetramethyl-19-trityloxynonadeca-11,17-dien-3-one

13(S),15(S)-bis(tert-butyldimethylsilanyloxy)-2(S)-[2(S)-(4-methoxyphenyl)-5(S)-methyl[1,3]dioxan-4(S)-yl]-9(R)-(4-methoxybenzyloxy)-6(R),8(S),10(S),16(S)-tetramethyl-19-trityloxynonadeca-11,17-dien-3(R)-ol