Can consumption of Ethylone and 5-methoxy-MiPT with ethanol in combination give rise to MDMA contents in your urine sample?

YES!!

You can't cheat the system... the people running these tests are way smarter than the substance abusers that think they can cheat it. Want to pass the test... abstain, have trouble abstaining, then you have an issue and you should seek out those groups available to help you beat your addiction.