Here we have 6 syllables, which might consist on many different kinds of metrical food. Being either a 3 feet or 2 feet line.
In this case, it seems most likely to be a trisyllable kind.
The stressed syllables being represented by capitalized letters, he have two possibilities:
COR-al IS FAR more RED (it sounds a bit weird. In this case, it would be a cretic)
COR-AL is FAR MORE red (it sounds weird as well. So, it most likely isn't an antibacchius)
COR-al is FAR more red (This one sounds more natural than the other 2 and than the two syllable metrics for this line. This one is a dactyl, where a stressed syllable is followed by 2 unstressed ones).
