butanoyl-CoA + (R)-carnitine <=> O-butanoyl-(R)-carnitine + CoA
butanoyl-coa + (r)-carnitine <=> o-butanoyl-(r)-carnitine + coa
butanoyl-CoA + (R)-carnitine <=> O-butanoyl-(R)-carnitine + CoA
butanoyl-coa + (r)-carnitine <=> o-butanoyl-(r)-carnitine + coa