IUPAC:(1S,8S,10S,17R,18S,19R,21S)-19-(dimethoxymethyl)-8,10,13,17-tetrahydroxy-6-methoxy-3-methyl-16,20,22-trioxaspiro[hexacyclo[17.2.1.0^{2,15}.0^{5,14}.0^{7,12}.0^{17,21}]docosane-18,2'-oxirane]-2(15),3,5,7(12),13-pentaen-11-one
IUPAC:(1S,8S,10S,17R,18S,19R,21S)-19-(dimethoxymethyl)-8,10,13,17-tetrahydroxy-6-methoxy-3-methyl-16,20,22-trioxaspiro[hexacyclo[17.2.1.0^{2,15}.0^{5,14}.0^{7,12}.0^{17,21}]docosane-18,2'-oxirane]-2(15),3,5,7(12),13-pentaen-11-one