wget https://4dn-open-data-public.s3.amazonaws.com/fourfront-webprod/files/b889fe83-0352-44a9-b7e5-816d544fea2a/4DNFIURFO4V8.r3d
aws s3 cp s3://4dn-open-data-public/fourfront-webprod/files/b889fe83-0352-44a9-b7e5-816d544fea2a/4DNFIURFO4V8.r3d Chr4C_Chr2A_45.r3d
test "972a9460942b359293293c0933584ad6" = "$(md5sum Chr4C_Chr2A_45.r3d)"
drs get -d https://data.4dnucleome.org 4DNFIURFO4V8