About the best you can do is to set a some limits to an FTP estimate.
If the Strava data was not the actual power meter data, then as Criggie says the short answer is no, you can't rely on that at all.
As an aside I thought that files uploaded to Strava that had power data defaulted to showing the real power meter data rather than an estimate.
If it is the actual power meter data, then you can probably at least narrow down a lower limit for FTP (provided of course the power meter is of a reasonable standard and you have used installed and used it correctly, e.g. ensuring a torque zero was performed before the race).
As Rider_X mentioned above - the first lower limit will be the average power for the whole race (~1.5 hours), so your FTP will be higher than 230W (assuming the data is from the power meter and not a Strava estimate).
The next lower limit will be your average power for about an hour, which in this case is ~250W.
If you have some analytics software such as WKO4 or Golden Cheetah, then it can work out for you what the peak 1-hour Normalized Power was. That will be closer to FTP than average power. Peak 1-hour NP may still be lower or higher than FTP depending on how hard the race was but it will not typically be higher by any more than 5%.
So if the race wasn't that hard, then peak 1-hour NP is not going to help you much except to bump up the lower limit of your estimate from the 250W average power value.
However, if the race was hard then your FTP will likely be somewhere between 95%-100% of your 1-hour maximal Normalized Power.
That then will at least give you an estimate to use until you have better data to improve your FTP estimate.
In the meantime just collect your data and learn to use the meter correctly - it can be helpful later on the be able to assess the nature of the training you currently do as you begin to learn what changes to make to your routine.
Here's an old but still popular post of mine about ways to estimate your FTP.
Number 5 on the list is using the Critical Power model, which can be augmented nowadays by use intelligent of the newer power-duration models (of which CP is an example):