wget https://4dn-open-data-public.s3.amazonaws.com/fourfront-webprod/wfoutput/6f311803-cde0-4d75-bb8b-9265fa206887/4DNFI4XWVUT6.mcool
aws s3 cp s3://4dn-open-data-public/fourfront-webprod/wfoutput/6f311803-cde0-4d75-bb8b-9265fa206887/4DNFI4XWVUT6.mcool 4DNFI4XWVUT6
test "8c9a0faaa7ccd0fd590837015973ad10" = "$(md5sum undefined)"
drs get -d https://data.4dnucleome.org 4DNFI4XWVUT6