6-methoxy-1-(4-nitrobenzyl)-3,4-dihydroisoquinoline

(6-methoxyisoquinolin-1-yl)(4-nitrophenyl)methanone

6,7-dimethoxy-1-[(4-nitrophenyl)methyl]-3,4-dihydroisoquinoline

1-acetoxy-3-methyl-1,3-butadiene