On it's own, nothing special. C3 and C4 are charged off the + and -, C1 and C2 are chrarged off the center tap of C3/C4, with the added voltage drop across the center top diode, so less than half the voltage, on a ratio depending on the totyal voltage..
as a DC circuit, it won't do much alone. But as an AC circuit, it might get interesting. Tesla did some interesting things with propigating waves and AC. My guess is this circuit would be used to shape the wave form at specific frequencies