{TAIL ~ A refrigerating machine oil composition} comprising an alicylic dicarboxylic acid ester compound having {HEAD ~ an alicyclic ring} and two ester groups represented by formula bonded to adjacent carbon atoms of the alicyclic ring: 
{ TAIL ~ A refrigerating machine oil composition } comprising an alicylic dicarboxylic acid ester compound having { HEAD ~ an alicyclic ring } and two ester groups represented by formula bonded to adjacent carbon atoms of the alicyclic ring :
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH