O=C(O)c1cc(=O)c2cc(OCC(O)COc3cccc4oc(C(=O)O)cc(=O)c34)ccc2o1 represents a molecule that is not identified as penetrating the blood brain barrier.
{SMILES#} represents a molecule that is {penetrate_BBB#not &NULL}identified as {penetrate_BBB__names__adjective}.