Enables the insect to feed on furanocoumarin-producing plants and evolved as an adaptation for detoxification of xanthotoxin and other furanocoumarins. an organic molecule + O2 + reduced [NADPH--hemoprotein reductase] = an alcohol + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] By xanthotoxin and bergapten (linear furanocoumarins) as well as by angelicin and sphondin (angular furanocoumarins). The sequence shown is that of 6B3-1, 6B3-2 seems to differ in 17 positions and is probably an allele. Belongs to the cytochrome P450 family.