import java.text.ParseException;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Locale;
 
public class Main {
	public static void main(String[] args) throws ParseException {
		String dateInString = "{ts '2021-03-24 12:52:38.933'}";
		DateTimeFormatter parser = DateTimeFormatter.ofPattern("'{ts '''yyyy-MM-dd HH:mm:ss.SSS'''}'", Locale.ENGLISH);
		LocalDateTime ldt = LocalDateTime.parse(dateInString, parser);
		System.out.println(ldt);
	}
}

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