wget https://4dn-open-data-public.s3.amazonaws.com/fourfront-webprod/files/979f0193-f5a6-4b6f-a065-7c7aaaf8e6d2/4DNFIDSR3G56.r3d
aws s3 cp s3://4dn-open-data-public/fourfront-webprod/files/979f0193-f5a6-4b6f-a065-7c7aaaf8e6d2/4DNFIDSR3G56.r3d Chr4A_Nucl_77.r3d
test "cbad105ef75fb600e005ebcf7d8dbac9" = "$(md5sum Chr4A_Nucl_77.r3d)"
drs get -d https://data.4dnucleome.org 4DNFIDSR3G56