Showing structure for 15-(17-bromo-1,5,7,9,11,13-hexahydroxy-16-methoxy-3,6,6,10-tetramethyl-15-methylideneheptadeca-2,16-dien-1-yl)-9-hydroxy-5,7,11,15-tetramethyl-2,14-dioxabicyclo[11.2.1]hexadec-4-en-3-one