Chemical Name: 3-(cyclobutyloxy)5,5-dimethyl-4-[4(methylsulfonyl)phenyl]furan-2(5H)one
Synonym: Misoprostol B ; methyl 7-[2-[(1E,4RS)-4-hydroxy-4-methyloct-1-enyl]-5-oxocyclopent-1-enyl]heptanoate
Smile: O=C1OC(C)(C)C(C2=CC=C(S(=O)(C)=O)C=C2)=C1OC3CCC3