Using CCOC(=O)CC1CC2(CCN(C(=O)NC3C4CC5CC(C4)CC3C5)CC2)c2cc(Cl)ccc21 to produce O=C(O)CC1CC2(CCN(C(=O)NC3C4CC5CC(C4)CC3C5)CC2)c2cc(Cl)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.