Using O=C1CC(NC(=O)C2CCCN3C(=O)CCC(NC(=O)c4ccccc4)C(=O)N23)C(OCc2ccccc2)O1 to produce O=CC(CC(=O)O)NC(=O)C1CCCN2C(=O)CCC(NC(=O)c3ccccc3)C(=O)N12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.