The third derivative of the following equation gives us the actual equation needed to find out how much caffeine has been ingested by a magic flying squid monster wandering the cosmos in search of love. The actual equation is able to be plotted on an XY graph that will allow ingested caffeine (in grams) to be on the Y axis and time (in seconds) to be on the X axis. They ingested the caffeine within 10 seconds. Assuming no caffeine left his system in the time it took to consume the caffeine, how much caffeine is left in the squid after 15 hours, also assuming that the half life of caffeine is 5 hours? Put your answer to 2 decimal places.

Equation
(y^4)=(7x^4)+(10x^3)+(187x^2)+x+(10 ^167.5)