Showing structure for 15-[2-(7-hydroxy-2-oxochromen-8-yl)ethenyl]-11,11,15-trimethyl-8-(2-methylbut-3-en-2-yl)-6,10,16-trioxatetracyclo[7.7.1.0²,⁷.0¹³,¹⁷]heptadeca-1,3,7,9(17)-tetraen-5-one