Unable to escape '&' in aci exec

I'm using [Exec functionality](https://docs.microsoft.com/en-us/azure/container-instances/container-instances-exec) to execute a shell command in a running container. 

I know that chaining multiple commands in not supported. But I have 1 command that includes '&' character, whenever I execute it, the command is chopped off at that character. I want a way to escape the '&' in the command.