Caffeine $($C$8$H$10$N$4$O$2)$ is the world's most consumed psychoactive drug. It's common name is $1,3,7-$trimethylxanthine. It is completely absorbed within $30$ to $45$ minutes and it effects diminish within about three hours. What is the molarity of a solution that contains $10\mathrm{.}1$ g of caffeine dissolved in $803$ ml of solution? Enter to $4$ decimal places.