user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0xd0,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x62616362,-0x9f(%rbp)
  movw   $0x63,-0x9b(%rbp)
  movl   $0x636261,-0xa8(%rbp)
  lea    -0x9f(%rbp),%rax
  mov    %rax,%rdi
  call   <removeDuplicateLetters@plt>
  mov    %rax,-0xc8(%rbp)
  mov    -0xc8(%rbp),%rdx
  lea    -0xa8(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    D24(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    -0xc8(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  movabs $0x6362636463616263,%rax
  mov    %rax,-0x99(%rbp)
  movb   $0x0,-0x91(%rbp)
  movl   $0x62646361,-0xa4(%rbp)
  movb   $0x0,-0xa0(%rbp)
  lea    -0x99(%rbp),%rax
  mov    %rax,%rdi
  call   <removeDuplicateLetters@plt>
  mov    %rax,-0xc0(%rbp)
  mov    -0xc0(%rbp),%rdx
  lea    -0xa4(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    D30(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    -0xc0(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  movabs $0x7469747173656874,%rax
  movabs $0x6f6c787074657978,%rdx
  mov    %rax,-0x50(%rbp)
  mov    %rdx,-0x48(%rbp)
  movabs $0x6669716564766565,%rax
  mov    %rax,-0x40(%rbp)
  movw   $0x7a6b,-0x38(%rbp)
  movb   $0x0,-0x36(%rbp)
  movabs $0x7079787469736568,%rax
  movabs $0x7a6b667164766f6c,%rdx
  mov    %rax,-0x90(%rbp)
  mov    %rdx,-0x88(%rbp)
  movb   $0x0,-0x80(%rbp)
  lea    -0x50(%rbp),%rax
  mov    %rax,%rdi
  call   <removeDuplicateLetters@plt>
  mov    %rax,-0xb8(%rbp)
  mov    -0xb8(%rbp),%rdx
  lea    -0x90(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    D30(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    -0xb8(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  movabs $0x6875726c6e74696d,%rax
  movabs $0x746d7a79666a6e7a,%rdx
  mov    %rax,-0x30(%rbp)
  mov    %rdx,-0x28(%rbp)
  movabs $0x77787374736e666d,%rax
  movabs $0x75786f626c78746b,%rdx
  mov    %rax,-0x20(%rbp)
  mov    %rdx,-0x18(%rbp)
  movl   $0x63696274,-0x10(%rbp)
  movb   $0x0,-0xc(%rbp)
  movabs $0x7a79666a68726c69,%rax
  movabs $0x6f626b7774736e6d,%rdx
  mov    %rax,-0x70(%rbp)
  mov    %rdx,-0x68(%rbp)
  movl   $0x637578,-0x60(%rbp)
  lea    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <removeDuplicateLetters@plt>
  mov    %rax,-0xb0(%rbp)
  mov    -0xb0(%rbp),%rdx
  lea    -0x70(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    D30(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    -0xb0(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L5
  call   <__stack_chk_fail@plt>
L5:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: tag: D24
datatype: string
name: extract_symbolic_data
arguments: tag: D30
datatype: string

tool: D24: First case: OK


tool: D30: Second case: OK


assistant: ```c
int main() {
  char s1[] = "bcabc";
  char expected1[] = "abc";
  char *result1 = removeDuplicateLetters(s1);
  assert(strcmp(expected1, result1) == 0);
  printf("First case: OK\n");
  free(result1);
  char s2[] = "cbacdcbc";
  char expected2[] = "acdb";
  char *result2 = removeDuplicateLetters(s2);
  assert(strcmp(expected2, result2) == 0);
  printf("Second case: OK\n");
  free(result2);
  char s3[] = "thesqtitxyetpxloeevdeqifkz";
  char expected3[] = "hesitxyplovdqfkz";
  char *result3 = removeDuplicateLetters(s3);
  assert(strcmp(expected3, result3) == 0);
  printf("Second case: OK\n");
  free(result3);
  char s4[] = "mitnlruhznjfyzmtmfnstsxwktxlboxutbic";
  char expected4[] = "ilrhjfyzmnstwkboxuc";
  char *result4 = removeDuplicateLetters(s4);
  assert(strcmp(expected4, result4) == 0);
  printf("Second case: OK\n");
  free(result4);
  return 0;
}
```