The term surface-active agent is identified in base64 scheme by the sequence c3VyZmFjZS1hY3RpdmUgYWdlbnQ=, while the MD5 signature is equal to b3a71f9792a43fea8ebf185838639cec. The ASCII encoding of surface-active agent in hexadecimal notation is 737572666163652d616374697665206167656e74.