How win against ILLEGAL FORMATION 2(DR-DL)-3N-3N-2 NO DC !!! help please

I'm playing against a much weaker team and i don't think i can lose in any formation but i want to be sure

This team is playing with only 2 defenders on the wings, with no central defenders.
3 DCM, none on the wings
3 CM, none on the wings
2 STrikers

What formation should i play ? should i focus my attacks in the middle because he has no DC's ? or should i play on the flanks because he has no players on the wings in midfield ?

any advice ? on formation and what orders

thx