I am trying to install a Honeywell RTH2300B thermostat. I can't get the wiring. I have a red, blue orange, green, yellow, brown and white wire and B, O, G, Y, W, Not Used, R, and RC terminals.

How I have Wired:
B-blue
O-orange
G-green
Y-yellow
W-white
Not Used-
R-red
RC-jumped to red
Extra brown wire
Can anybody help me out? Thanks in advance.