It's possible but really, really inefficient and outstandingly dangerous even if all goes well.
Pyridine exposure is a sure fire way to mutate your DNA at the base level along with lopping great chunks off the chromosomes just for the fun of it, C--> M rarely yields over ~45%, any leftover Codeine will produce 6-MAC which causes rapid and complete anaphylaxis leading to pulmonary oedema while doing an Elephant Man impression, leftover Paracetamol will destroy the circulatory system and clog the alveoli, Boron Tribromide tends to try to kill you with vigour.... and a billion other dangers.