The term quaternary ammonium compound is identified in base64 scheme by the sequence cXVhdGVybmFyeSBhbW1vbml1bSBjb21wb3VuZA==, while the MD5 signature is equal to 9690f74983487dfe678a7b6ceaf1ada5. The ASCII encoding of quaternary ammonium compound in hexadecimal notation is 7175617465726e61727920616d6d6f6e69756d20636f6d706f756e64.