MD5 (povchem/povchem.c) = a8eceada2acdee9f69e018a49033dfc4
MD5 (povchem/povchem.cfg) = 23c6417b12d9562c68e1242b7e339138
MD5 (povchem/periodic.tab) = b449dd5ae9f5e958f32a058faf46e233