and maybe no need because there are individual parts on frames, that only used incombination on singular models. but then it's more a riddle to identify the model
my guess is CAAD3 R500 after 2000.
CAAD3 coz of the straight seat stays. R500 coz the 1 1/8 ahead stem. R600 isn't possible, coz as far as i know they had threaded forks. and after year 2000, coz this bike has already other cable holders than in years before, when the shifters were installed at the down tube.