user: Converte this assembly snippet into its equivalent C code:

```asm
<b2HIT>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %rdi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,0x28(%rsp)
  xor    %eax,%eax
  call   <strlen@plt>
  lea    0x4(,%rax,4),%edi
  call   <vrna_alloc@plt>
  mov    %rax,%r13
  mov    %rbx,%rdi
  call   <aux_struct@plt>
  mov    %rax,%rbx
  mov    %rax,0x8(%rsp)
  lea    D73(%rip),%rsi
  mov    %r13,%rdi
  call   <strcpy@plt>
  movzbl (%rbx),%eax
  test   %al,%al
  je     L56
  lea    0x1(%rbx),%rbx
  mov    $0x1,%ebp
  mov    $0x0,%r15d
  mov    $0x0,%r12d
  lea    0x1e(%rsp),%r14
  jmp    L77
L190:
  cmp    $0x5d,%al
  jne    L130
  test   %r12d,%r12d
  jg     L174
L5:
  lea    0x1(%r15),%edx
  lea    D64(%rip),%rsi
  mov    %r14,%rdi
  call   <sprintf@plt>
  movslq %ebp,%rdi
  add    %r13,%rdi
  mov    %r14,%rsi
  call   <strcat@plt>
  mov    %r14,%rdi
  call   <strlen@plt>
  add    %eax,%ebp
  mov    $0x0,%r15d
  jmp    L130
L120:
  test   %r12d,%r12d
  jg     L14
L93:
  movslq %ebp,%rdi
  add    %r13,%rdi
  lea    D73(%rip),%rsi
  call   <strcat@plt>
  add    $0x1,%ebp
L130:
  add    $0x1,%rbx
  movzbl -0x1(%rbx),%eax
  test   %al,%al
  je     L143
L77:
  cmp    $0x5b,%al
  je     L120
  jg     L190
  cmp    $0x29,%al
  je     L136
  cmp    $0x2e,%al
  jne    L130
  add    $0x1,%r12d
  jmp    L130
L14:
  mov    %r12d,%edx
  lea    D27(%rip),%rsi
  mov    %r14,%rdi
  call   <sprintf@plt>
  movslq %ebp,%rdi
  add    %r13,%rdi
  mov    %r14,%rsi
  call   <strcat@plt>
  mov    %r14,%rdi
  call   <strlen@plt>
  add    %eax,%ebp
  mov    $0x0,%r12d
  jmp    L93
L136:
  test   %r12d,%r12d
  jg     L42
L67:
  add    $0x1,%r15d
  jmp    L130
L42:
  mov    %r12d,%edx
  lea    D27(%rip),%rsi
  mov    %r14,%rdi
  call   <sprintf@plt>
  movslq %ebp,%rdi
  add    %r13,%rdi
  mov    %r14,%rsi
  call   <strcat@plt>
  mov    %r14,%rdi
  call   <strlen@plt>
  add    %eax,%ebp
  mov    $0x0,%r12d
  jmp    L67
L174:
  mov    %r12d,%edx
  lea    D27(%rip),%rsi
  mov    %r14,%rdi
  call   <sprintf@plt>
  movslq %ebp,%rdi
  add    %r13,%rdi
  mov    %r14,%rsi
  call   <strcat@plt>
  mov    %r14,%rdi
  call   <strlen@plt>
  add    %eax,%ebp
  mov    $0x0,%r12d
  jmp    L5
L143:
  test   %r12d,%r12d
  jg     L145
L62:
  movslq %ebp,%rdi
  add    %r13,%rdi
  lea    D77(%rip),%rsi
  call   <strcat@plt>
  mov    0x8(%rsp),%rdi
  call   <free@plt>
  mov    %r13,%rdi
  call   <strlen@plt>
  lea    0x2(%rax),%edi
  call   <vrna_alloc@plt>
  mov    %rax,%rbx
  mov    %r13,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  mov    %r13,%rdi
  call   <free@plt>
  mov    0x28(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L30
  mov    %rbx,%rax
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L145:
  lea    0x1e(%rsp),%rbx
  mov    %r12d,%edx
  lea    D27(%rip),%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  movslq %ebp,%rdi
  add    %r13,%rdi
  mov    %rbx,%rsi
  call   <strcat@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  add    %eax,%ebp
  jmp    L62
L56:
  mov    $0x1,%ebp
  jmp    L62
L30:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_label: D73
datatype: string
name: parse_data
arguments: data_label: D64
datatype: string
name: parse_data
arguments: data_label: D27
datatype: string
name: parse_data
arguments: data_label: D77
datatype: string

tool: D73: (

tool: D64: P%d)

tool: D27: (U%d)

tool: D77: R)

assistant: ```c
char *b2HIT(const char *structure) {
  int i, u, p, l;
  char *string, *temp, *HIT, tt[10];
  temp = (char *)vrna_alloc(strlen(structure) * 4 + 4);
  string = aux_struct(structure);
  strcpy(temp, "(");
  i = p = u = 0;
  l = 1;
  while (string[i]) {
    switch (string[i]) {
    case '.':
      u++;
      break;
    case '[':
      if (u > 0) {
        sprintf(tt, "(U%d)", u);
        strcat(temp + l, tt);
        l += strlen(tt);
        u = 0;
      }
      strcat(temp + l, "(");
      l++;
      break;
    case ')':
      if (u > 0) {
        sprintf(tt, "(U%d)", u);
        strcat(temp + l, tt);
        l += strlen(tt);
        u = 0;
      }
      p++;
      break;
    case ']':
      if (u > 0) {
        sprintf(tt, "(U%d)", u);
        strcat(temp + l, tt);
        l += strlen(tt);
        u = 0;
      }
      sprintf(tt, "P%d)", p + 1);
      strcat(temp + l, tt);
      l += strlen(tt);
      p = 0;
      break;
    }
    i++;
  }
  if (u > 0) {
    sprintf(tt, "(U%d)", u);
    strcat(temp + l, tt);
    l += strlen(tt);
  }
  strcat(temp + l, "R)");
  free(string);
  HIT = (char *)vrna_alloc(sizeof(char) * (strlen(temp) + 2));
  strcpy(HIT, temp);
  free(temp);
  return (HIT);
}
```