IUPAC:(1R,18R)-18-hydroxy-1-methyl-13-oxapentacyclo[10.6.1.0^{2,10}.0^{5,9}.0^{15,19}]nonadeca-2(10),3,5(9),12(19),14-pentaene-6,11,16-trione
IUPAC:(1R,18R)-18-hydroxy-1-methyl-13-oxapentacyclo[10.6.1.0^{2,10}.0^{5,9}.0^{15,19}]nonadeca-2(10),3,5(9),12(19),14-pentaene-6,11,16-trione