Please provide as a hin file containing a structure of all non-hydrogen type atoms.
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Then we will provide to you the characteristic polynomial of the structure:
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Note: too many vertices (atoms) and/or too many edges (bonds) it will crash the program.
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A example hin file can be found <A Href='tcpib.hin' Target='_blank'>here</A>.
<form method='post' action='a_characteristic_polynomial_out.php' enctype='multipart/form-data'>
<input type='file' name='hin_file'>
<input type='submit'>
</form>