Using O=C([O-])[O-], CCCCCc1cnc(NCCSCc2nc[nH]c2C)c(C#N)c1 to produce CCCCCc1cnc(NCCSCc2nc[nH]c2C)c(C(=O)O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.