How to define the pin locations for 2-dimensional input?

I have a 2-dimensional input in my design - input [2:0] data_in [15:0]. After synthesis with genus, I got a netlist where the inputs are like \data[15], \data[14],...,\data[0]. And furthermore it has definitions like input [2:0] \data[15], .... So how can I define the pin locations of each of the bits for this input? Can I define \data[15]'s inner bits like \data[15][0]? Is it possible to define this with def files?