The term oxaloacetic acid is identified in base64 scheme by the sequence b3hhbG9hY2V0aWMgYWNpZA==, while the MD5 signature is equal to 3ac928199611ba2e9d0aba7b5f602db7. The ASCII encoding of oxaloacetic acid in hexadecimal notation is 6f78616c6f6163657469632061636964.