Showing structure for (1s,9s,15r,16r,17s)-4,5,6,9,10,11-hexamethoxy-15,16-dimethyl-8-oxatetracyclo[7.7.1.0²,⁷.0¹³,¹⁷]heptadeca-2(7),3,5,10,13-pentaen-12-one