You'll have to select the red areas (via magic wand, select color color range, pen, quick mask, etc).
•Save the selection
•Select All
•Cut (background should be white)
•Convert to CMYK
•Select the Black channel in the channels panel
•Paste (paste should be to the black channel only)
•Load the saved selection
•Select the cyan channel in channels panel
•Fill with black
•go back to the Black channel and fill with white