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s3://zinc3d/zinc-22a/H21/H21M000/b/H21M000-N-aaaaab.db2.tgz
s3://zinc3d/zinc-22a/H21/H21M100/a/H21M100-N-aaaaaa.db2.tgz
s3://zinc3d/zinc-22a/H21/H21M200/a/H21M200-N-aaaaaa.db2.tgz