Synonyms: 4-Benzoxazolecarboxylicacid,2-[[3,9,11-trimethyl-8-[1-methyl-2-oxo-2-(1H-pyrrol-2-yl)ethyl]-1,7-dioxaspiro[5.5]undec-2-yl]methyl]-,[6S-[6a(2S*,3S*),8b(R*),9b,11a]]-; 1,7-Dioxaspiro[5.5]undecane, 4-benzoxazolecarboxylic acid deriv.;Cezomycin