Using O=C(CC(=Cc1cccc2ccccc12)C(=O)O)NCCc1ccccc1 to produce O=C(CC(Cc1cccc2ccccc12)C(=O)O)NCCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.