The term proprietary drug is identified in base64 scheme by the sequence cHJvcHJpZXRhcnkgZHJ1Zw==, while the MD5 signature is equal to 19e2b2a2476c6bccb45a8baedd56dc1f. The ASCII encoding of proprietary drug in hexadecimal notation is 70726f70726965746172792064727567.