Problema php mysql

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''users'('id','name','lname','uname','email','pass') VALUES (NULL, 'qqq', 'qqq', ' at line 1

<?php
require('config.php');
if (isset($_POST["submit"] ))
{
//Perform the verification of the sesion
$email1 = $_POST['email1'];
$email2 = $_POST['email2'];
$pass1 = $_POST['pass1'];
$pass2 = $_POST['pass2'];

if($email1 == $email2) {
  if($pass1 == $pass2) {
   //All good. Carry on.
  
   $name = mysql_escape_string($_POST["name"]);
   $lname = mysql_escape_string($_POST["lname"]);
   $uname = mysql_escape_string($_POST["uname"]);
   $email1 = mysql_escape_string($email1);
   $email2 = mysql_escape_string($email2);
   $pass1 = mysql_escape_string($pass1);
   $pass2 = mysql_escape_string($pass2);
  
   mysql_query("INSERT INTO 'users'('id','name','lname','uname','email','pass') VALUES (NULL, '$name', '$lname', '$uname', '$email1','$pass1')") or die(mysql_error());
  
  
  
  
  }else{
   echo "Sorry, your password do not match.<br />";
   exit();

  }
  }
else
  {
  echo "Sorry, you email do not match.<br />";
  }

}else{
$form = <<<EOT
<form action="register.php" method="POST">
First Name: <input type="text" name="name" /><br />
Last Name: <input type="text" name="lname" /><br />
Username: <input type="text" name="uname" /><br />
Email: <input type="text" name="email1" /><br />
Confirm Email: <input type="text" name="email2" /><br />
Password: <input type="password" name="pass1" /><br />
Confirm Password: <input type="password" name="pass2" /><br />
<input type="submit" value="Register" name="submit" />
</form>
EOT;
echo $form;
}


?>

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