9-methoxy-3-methyl-1H-naphtho[2,1-b]pyran-1-one

(4aSR)-4,4a,5,6-Tetrahydro-7-methoxynaphthalin-2(3H)-on

氯甲烷

9,11-dihydroxy-2-methoxy-benzo[a]xanthen-12-one