Schroder multi assest revolution
This fund, I believe.
I would only consider doing this if your CPF Special Account were your last available source of investment dollars AND you really, really want greater exposure to stocks than what your other investable dollars can provide. It's a ridiculously expensive way to get up to ~70% of your SA dollars (the ones above S$40,000) into stocks. The fund benchmarks itself against a 70-30 stocks-bonds portfolio, and it carries a very high expense ratio of 1.49%.
But even that's a stretch, frankly. Let's suppose you have S$200,000 of investable dollars outside CPF SA and an SA balance of S$90,000, meaning you have S$50,000 of investable SA dollars for a total of S$250,000. And you've decided that investing S$200,000 in stocks isn't enough for you, that you want even more exposure to stocks. Instead of investing your 4.0+% p.a. interest earning SA dollars in a high cost unit trust, why don't you head over to the options exchanges and effectively increase your exposure to stocks that way (using part of the S$200,000)? You can make ridiculously "exciting" bets in the options exchanges if S$200,000 in a simple long stocks position isn't exciting enough for you.