I see here psu specialists. Molex is 4 pin connector.

You have ~12V yellow cable
GND 2 black ones
1 red with ~5 V

And betwen yellow and red is ~7V

But problem with molex is that have always small cross section.

Or you need other psu or you can try to make custom cables like that:

I am using this in one card (bought psu with not enought 6/8pin pcie cables)

3/4 molex -> 6/8 PCIE connector. And remeber, all molex must have another line, not 1 cable with 3 molex and connected to card <- this still be 1 cable.

I have super flower leadex 1600w GOLD 93+% ef. Have enought cables to use 6 PIN risers and power cards