or download this
> >2L type=chromosome_arm; loc=2L:1..23011544; ID=2L; dbxref=REFSEQ:
+NT_033779,GB:AE014134; MD5=bfdfb99d39fa5174dae1e2ecd8a231cd; length=2
+3011544; release=r5.54; species=Dmel;
CGACAATGCACGACAGAGGAAGCAGAACAGATATTTAGATTGCCTCTCAT
TTTCTCTCCCATATTATAGGGAGAAATATGATCGCGTATGCGAGAGTAGT
...
GAGATATTTAGATTGCCTATTAAATATGATCGCGTATGCGAGAGTAGTGC
CAACATATTGTGCTCTCTATATAATGACTGCCTCTCATTCTGTCTTATTT
TACCGCAAACCCAAATCGACAATGCACGACAGAGGAAGCAGAACAGATAT