Using CCCCCc1cc(O)c2c(c1)OC(C)(C)C(CCC(=O)O)C2C, O=C1CCC(=O)N1O to produce CCCCCc1cc(O)c2c(c1)OC(C)(C)C(CCC(=O)ON1C(=O)CCC1=O)C2C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.