## Endpoint to Predict
- Endpoint scope: assay
- Measurement type: IC50
- Label type: continuous
- Binary semantics: pchembl
- Assay description: Antiviral activity against HIV-1 IIIB assessed as inhibition of HIV-1 Env mediated cell-cell fusion in MT-2 cells preincubated for 30 mins followed by cell addition and measured after 2 hrs by calcein AM staining based fluorescence microscopy
- Assay organism: Human immunodeficiency virus 1
- Target name: Human immunodeficiency virus 1
- Target type: ORGANISM
- Target organism: Human immunodeficiency virus 1

## Reference Molecule A
- Canonical SMILES: CC[C@H](C)[C@H](NC(C)=O)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCCN)C(=O)N[C@H](C(=O)N[C@@H](Cc1c[nH]cn1)C(=O)N[C@@H](Cc1c[nH]cn1)C(=O)N[C@H](C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N[C@@H](C)C(=O)N[C@H](C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)NCC(=O)N[C@H](C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](C)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N[C@H](C(=O)N[C@@H](CC(C)C)C(N)=O)[C@@H](C)CC)[C@@H](C)CC)C(C)C)[C@@H](C)O)[C@@H](C)CC)[C@@H](C)CC)[C@@H](C)CC)C(C)C)[C@@H](C)CC
- Properties:
- ChEMBL ID: CHEMBL5078598
- Molecule type: Unknown
- Molecular weight: 4429.34
- Heavy atoms: 313
- Hydrogen bond donors: 61
- Hydrogen bond acceptors: 56
- TPSA: 1805.7
- LogP: -10.15
- Rotatable bonds: 158
- Ring count: 4
- Aromatic rings: 4
- Formal charge: 0
- Fraction Csp3: 0.69
- QED: 0.01

## Known Reference Result on This Endpoint
- Molecule A clean result: median pChEMBL = 6.33
- This result is provided as context for predicting Molecule B on the same endpoint.

## Reference Molecule A Other ChEMBL Evidence
- type IC50; relation =; value 472; units nM; pChEMBL 6.33

## Query Molecule B
- Canonical SMILES: CC[C@H](C)[C@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CO)NC(=O)[C@H](Cc1cnc[nH]1)NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CO)NC(=O)[C@@H](NC(=O)[C@H](Cc1ccc(O)cc1)NC(C)=O)[C@@H](C)O)[C@@H](C)CC)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)N[C@@H](C)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)N[C@@H](Cc1ccccc1)C(N)=O
- Properties:
- ChEMBL ID: CHEMBL525076
- Preferred name: ENFUVIRTIDE
- Molecule type: Protein
- Max clinical phase: 4
- Molecular weight: 4491.94
- Heavy atoms: 319
- Hydrogen bond donors: 63
- Hydrogen bond acceptors: 60
- TPSA: 1902.89
- LogP: -15.38
- Rotatable bonds: 151
- Ring count: 9
- Aromatic rings: 9
- Formal charge: 0
- Fraction Csp3: 0.56
- QED: 0.02

## Molecule Similarity
- Weighted Tanimoto: 0.6

Answer: 7.62