User: I'm searching for the SMILES of a molecule that can be described as:
The molecule is a polymer composed of PEG-ylated sorbitan, where the total number of poly(ethylene glycol) units is 20 (w + x + y + z = 20) and a single terminal is capped by a stearate group. It has a role as a nonionic surfactant.
Assistant: This is a molecule that fits your description: CCCCCCCCCCCCCCCCCC(=O)OCCOCC(OCCO)[C@H]1OCC(OCCO)[C@H]1OCCO
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that can be described {#by|as!}:
{description#}
Assistant: This is a molecule that fits {#your|this!} description: {SMILES#}
2-[2-[(2R,3R)-3,4-bis(2-hydroxyethoxy)oxolan-2-yl]-2-(2-hydroxyethoxy)ethoxy]ethyl octadecanoate
The molecule is a polymer composed of PEG-ylated sorbitan, where the total number of poly(ethylene glycol) units is 20 (w + x + y + z = 20) and a single terminal is capped by a stearate group. It has a role as a nonionic surfactant.