The SMILES O=C(Nc1ccc2c(c1)CCC2)C1CCN(c2c3c(nc4ncnn24)CCC3)CC1 is a human ether-à-go-go related gene (hERG) blocker.
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.