(Z)-2-Methyl-2-butenoic acid [(3R)-2,3,8,8aα-tetrahydro-5-hydroxy-3,6,8,8-tetramethyl-4,9-dioxo-3aβ,7-methano-1H-azulen-7α(4H)-yl] ester
CAS No. 38044-09-6