3-octadecanoyl-sn-glycerol + (9Z)-octadecenoyl-CoA <=> 1-(9Z-octadecenoyl)-3-octadecanoyl-sn-glycerol + CoA
3-octadecanoyl-sn-glycerol + (9z)-octadecenoyl-coa <=> 1-(9z-octadecenoyl)-3-octadecanoyl-sn-glycerol + coa