label: 3-(2,4-Dihydroxy-5-(3-methyl-2-buten-1-yl) phenyl)-4-hydroxy-5-((4-hydroxy-3-(3-methyl-2-buten-1-yl) phenyl) methylene)-2(5H)-furanone
label_lc: 3-(2,4-dihydroxy-5-(3-methyl-2-buten-1-yl) phenyl)-4-hydroxy-5-((4-hydroxy-3-(3-methyl-2-buten-1-yl) phenyl) methylene)-2(5h)-furanone