wget https://4dn-open-data-public.s3.amazonaws.com/fourfront-webprod/wfoutput/e81bf10f-2cc2-4105-8225-2ec4c91d797c/4DNFIF4YWBUX.mcool
aws s3 cp s3://4dn-open-data-public/fourfront-webprod/wfoutput/e81bf10f-2cc2-4105-8225-2ec4c91d797c/4DNFIF4YWBUX.mcool 4DNFIF4YWBUX
test "a9c4ff4b813e00cfd8bb7e2f2a603703" = "$(md5sum undefined)"
drs get -d https://data.4dnucleome.org 4DNFIF4YWBUX