Showing structure for 15-[4-(acetyloxy)-1-formyl-1-hydroxy-5,5,8a-trimethyl-4a,6,7,8-tetrahydro-4h-naphthalen-2-yl]-11-hydroxy-2,6,6-trimethyl-12,14,16-trioxatetracyclo[8.6.0.0¹,¹³.0²,⁷]hexadec-9-en-8-yl acetate