Using C1=COCCC1, O=C(NC12CCC(C(=O)O)(CC1)CC2)OCc1ccccc1 to produce O=C(NC12CCC(C(=O)OC3CCCCO3)(CC1)CC2)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.