Cell penetrating molecule

A molecule having the structure of formula (I):

• (CPP)-(S1)-(L1)-(S2)-(L2)
• or formula (II)
• (L1)-(S1)-(CPP)-(S2)-(L2);
• wherein:
• (a) (CPP) is a cell penetrating peptide arranged in the N to C terminal direction;
• (S1) and (S2) are spacer moieties which are independently present or absent;
• (L1) is a first linking moiety;
• (L2) is a second linking moiety;
• (b) each of (L1) and (L2) is independently attached to a separate cargo molecule which comprises an oligonucleotide;
• (c) each said oligonucleotide comprises a sequence which specifically hybridises to a target sequence and either:
• (i) the oligonucleotide attached to (L1) is identical to the oligonucleotide attached to (L2);
• or
• (ii) the oligonucleotide attached to (L1) and the oligonucleotide attached to (L2) each comprise a sequence which specifically hybridises to the target sequence;
• or
• (iii) the oligonucleotide attached to (L1) comprises a sequence which specifically hybridises to the target sequence in an RNA molecule and the oligonucleotide attached to (L2) comprises a sequence which specifically hybridises to a second, different target sequence in the same RNA molecule;
• or
• (iv) the oligonucleotide attached to (L1) comprises a sequence which specifically hybridises to the target sequence in an RNA molecule, the sequence of which RNA molecule is encoded by a sequence in the genome of a cell which at least partially overlaps on the same or the opposite DNA strand with a sequence in said genome which encodes a second RNA molecule, and the oligonucleotide attached to (L2) comprises a sequence which specifically hybridises to a second target sequence in said second RNA molecule.