常用名:2H,6H-Benzo[1,2-b:5,4-b']dipyran-2-one, 7,8-dihydro-8,8-dimethyl-
常用名:2H,6H-Benzo[1,2-b:5,4-b']dipyran-2-one, 7,8-dihydro-8,8-dimethyl-
IUPAC:8,8-dimethyl-2H,6H,7H,8H-pyrano[3,2-g]chromen-2-one
IUPAC:8,8-dimethyl-2H,6H,7H,8H-pyrano[3,2-g]chromen-2-one