A team in the same group as me in the champions league this season used this formation. He didn't use it against me today though. He drew 0:0 against a 3:4:3 and beat the defensive bunker (5-1-2-1-1 ND) 2:1. Quality differences between the 3 teams are all in the same range.
If it was me i'd attack him right up the middle with the 4-1-2-1-2 ND since with only 1 MC he won't be able to adequately defend the middle. You'd still have 4 DC's to handle his 2 ST, a DMC for the AMC and DL/DR for AML/AMR. Normal, through the middle, own half, mixed, hard tackling, zonal, counter, no offside. Red arrows on DL/DR, DMC, MC, MC. AMC is optional.
They're are probably many different ways to adequately attack this though since he has only one non-attacking midfielder and none in the defensive midfield.