You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a pde inhibitor and belongs to the heart failure treatment class of molecules.
user
CC(C)NCC(O)COc1ccc(OCCCNC(=O)CCCOc2ccc3[nH]c(=O)ccc3c2)cc1
assistant