The nanodrugs were composed of three small molecules, among which IR783 is a commercially available near‐infrared (NIR) dye with a heptamethine cyanine structure and serves as the stabilizer to form a nanoformulation.[16] After intravenous injection, IR783‐stabilized nanodrugs could accumulate in tumor tissues based on passive targeting and be internalized into breast cancer cells through caveolin‐1 (CAV‐1)‐mediated endocytosis. Here, CAV1 is linked to breast carcinoma.