Name of circuits with parallel branches starting and ending at different points
As for your circuit, we can redraw it like this: 







simulate this circuit &ndash; Schematic created using CircuitLab

And we can try to use one of a network analysis technics available to us. 
https://en.wikipedia.org/wiki/Network_analysis_(electrical_circuits)
For an example: delta-wye transformation, nodal analysis, mesh, Thévenin's theorem etc.   

With Thevenin example can be found here