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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
This list of packages is probably a good place to start. It's a little unclear what your dataset looks like but at a guess you're going to need to parse molecular formulas and perhaps structures (you'll need to convert those into some machine-readable format like InChI). Sounds like you also need to consider molecular weight so you'll need a mass calculator if you don't have those values; you could build your own or leverage one of many available.
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