The term polyphosphoric acid is identified in base64 scheme by the sequence cG9seXBob3NwaG9yaWMgYWNpZA==, while the MD5 signature is equal to 160459ab6d84fbbdea3ab54480b01d77. The ASCII encoding of polyphosphoric acid in hexadecimal notation is 706f6c7970686f7370686f7269632061636964.