Using CCCn1ncc2c(=O)[nH]c(-c3cc(Br)ccc3OCC)nc21, O=C=O to produce CCCn1ncc2c(=O)[nH]c(-c3cc(C(=O)O)ccc3OCC)nc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.