Mesh Cache Modifier - Cache File Format

Hi,
I’ve searched web and forum about this with no luck.
I purchased a jellyfish model which came with an ‘Animated FBX with point cache files’ as one of the formats. The point cache files are an .mc file type. My understanding is Blender currently only supports .mdd or .pc2 formats through the Mesh Cache Modifier. Does anyone know a work-around with the files I have? I’ve asked the seller if they’d mind providing me with the vertex animation in an .mdd file but have not heard back yet.
Thanks.