MAGNESATE(1-),[9,14-DIETHYL-21-(METHOXYCARBONYL)- 4,8,13,18-TETRAMETHYL-20-OXO-3- PHORBINEPROPANOATO(3-)-KN23,KN24,KN25,KN26]- ,HYDROGEN,[SP-4-2-[3S-(3R,4?21?]]-