New England Clam Chowder

Name: New England Clam Chowder
Ingredients: 3 cans (6.5 ounces each) chopped clams in clam juice, (drained (reserve juice)); 1 bottle (8 ounces) clam juice; 6 strips thick-cut bacon, (chopped); 1 tablespoon unsalted butter; 1 medium yellow onion, (chopped); 2 ribs celery, (finely chopped); 2 teaspoons garlic, (minced); ⅓ cup all-purpose flour; 2 cups chicken broth; 3 medium Yukon Gold potatoes, (about 1 ¼ pounds, peeled and diced into ¼-inch cubes (about 3 cups)); ½ teaspoon dried parsley; ½ teaspoon dried oregano; ½ teaspoon kosher salt; ¼ teaspoon black pepper; ¼ teaspoon red pepper flakes; 1 cup heavy cream; fresh parsley, (chopped, for garnish)