Open question: How to the pharmaceutical enterprises do you explain the financing of the delivery payments?

A pharmaceutical enterprise, which already began on the development of a drug and a private cheapness investor is ready, the company $500 million for its deliveries R&D-1. to pay, which are connected with future incomes of the drug in the development, as soon as it was by all processes and for the future deliveries of sale 2. into the trade is brought, which are connected during a specific time period with an already existing drug by the company.