user: Demonstrate the C code that generates the assembly output below:

```asm
<main>:
  endbr64
  sub    $0x408,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x3f8(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rdi
  lea    D18(%rip),%rsi
  mov    $0x7d,%ecx
  rep movsq %ds:(%rsi),%es:(%rdi)
  movzbl (%rsi),%eax
  mov    %al,(%rdi)
  mov    %rsp,%rdx
  lea    0x3db(%rsp),%rcx
  mov    $0x0,%esi
L0:
  movsbl (%rdx),%eax
  sub    $0x30,%eax
  cltq
  movsbl 0x1(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0x2(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0x3(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0x4(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0x5(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0x6(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0x7(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0x8(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0x9(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0xa(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0xb(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  movsbl 0xc(%rdx),%edi
  sub    $0x30,%edi
  movslq %edi,%rdi
  imul   %rdi,%rax
  cmp    %rax,%rsi
  cmovb  %rax,%rsi
  add    $0x1,%rdx
  cmp    %rcx,%rdx
  jne    L0
  lea    D4(%rip),%rdi
  call   <printf@plt>
  mov    0x3f8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L11
  mov    $0x0,%eax
  add    $0x408,%rsp
  ret
L11:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: data_tag: D18
datatype: string
name: retrieve_data
arguments: data_tag: D4
datatype: string

tool: D18: 7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450

tool: D4: Max: %llu


assistant: ```c
int main(int argc, char *argv[]) {
  unsigned long long max_prod = 0;
  unsigned long long prod = 0;
  char str[] = "7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450";
  for (int i = 0; i <= 986; i++) {
    prod = (unsigned long long)(str[i] - '0') * (str[i + 1] - '0') * (unsigned long long)(str[i + 2] - '0') * (str[i + 3] - '0') * (unsigned long long)(str[i + 4] - '0') * (str[i + 5] - '0') * (unsigned long long)(str[i + 6] - '0') * (str[i + 7] - '0') * (unsigned long long)(str[i + 8] - '0') * (str[i + 9] - '0') * (unsigned long long)(str[i + 10] - '0') * (str[i + 11] - '0') * (unsigned long long)(str[i + 12] - '0');
    if (prod >= max_prod)
      max_prod = prod;
  }
  printf("Max: %llu\n", max_prod);
  return 0;
}
```