1,2-di-(9Z-octadecenoyl)-sn-glycero-3-cytidine-5'-diphosphate + 1D-myo-inositol 3-phosphate = 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phospho-(1D-myo-inositol-3-phosphate) + CMP + H(+) — reaction