Using O=C(CCCN1CCCCC1)c1ccc2c(c1)Cc1cc(C(=O)CCCN3CCCCC3)ccc1-2 to produce OC(CCCN1CCCCC1)c1ccc2c(c1)Cc1cc(C(O)CCCN3CCCCC3)ccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.