The term superior pulmonary vein is identified in base64 scheme by the sequence c3VwZXJpb3IgcHVsbW9uYXJ5IHZlaW4=, while the MD5 signature is equal to 1f5fa0dfe8a14003b522c31b9e1f9998. The ASCII encoding of superior pulmonary vein in hexadecimal notation is 7375706572696f722070756c6d6f6e617279207665696e.