1.
In a large baking dish, whisk cilantro, brown sugar, canola oil, soy sauce, sesame oil, garlic, crushed red pepper, black pepper, and coriander to blend well. Reserve one-fourth cup of the mixture in a small bowl for the slaw. Place steak in the remaining marinade and turn to coat. Marinate for at least 20 minutes at room temperature, or cover and refrigerate for up to one day, turning occasionally. Cover and refrigerate the reserved marinade.
2.
Heat grill pan or outdoor grill over medium heat. Remove steak from the marinade (discard the marinade) and grill, turning halfway through cooking, for a total of about 10 minutes, until the meat reaches an internal temperature of 130 degrees Fahrenheit for medium-rare or 140 degrees Fahrenheit for medium. Transfer the steak to a cutting board and let stand for five to 10 minutes.
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