label: 1,10,10-trimethyl-2-(3,4,5-trimethoxyphenyl)-1,2,2a,4,10,10a-hexahydro-3H-cyclobuta(4,5)pyrano(3,2-c)quinolin-3-one
label_lc: 1,10,10-trimethyl-2-(3,4,5-trimethoxyphenyl)-1,2,2a,4,10,10a-hexahydro-3h-cyclobuta(4,5)pyrano(3,2-c)quinolin-3-one