甲基丙烯酸甲酯

1,4-二羟基蒽醌

2',7'-dihydroxy-spiro[phthalan-1,9'-xanthen]-3-one

环戊二烯

5,6-dimethyl-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione