"The present invention also provides a process for preparing the compound which comprises reacting a compound having the structure ##STR3## wherein R1 is H--, H3 C--or any other functional group; wherein each R2, R3, and R4 is an alkyl group which may be straight, branched, disubstituted, or unsubstituted, and wherein each R2, R3, and R4 may be independently the same as, or different from, the othe" . . . . .