CJam-Flavored Underload

CJam-Flavored Underload is a dialect of Underload that makes it a proper subset of CJam.

Instructions
The first and sixth translations are not perfect matches; nested quotes and backslashes may need to be escaped.

Example
Here is the Fibonacci program from the Underload wiki page translated into CFU:

"\"\"\"+\"""\\_~_o+`\\~`\\;\\+\\_\"/\"o~"_~

Interpreter
Since CFU is a subset of CJam, any CJam interpreter can also interpret CFU. There is an interpreter located on cjam.aditsu.net, as well as on Try it Online!