Showing structure for 16-(2,4-dihydroxy-6-methylbenzoyl)-4,6,10-trihydroxy-12-methyl-14-oxatetracyclo[7.7.1.0²,⁷.0¹³,¹⁷]heptadeca-1(16),2,4,6,9(17),10,12-heptaene-8,15-dione