Using COC(=O)/C=C/c1ccc2c(c1)C(=O)CC1(CCN(Cc3c[nH]c4ccccc34)CC1)O2 to produce O=C(O)/C=C/c1ccc2c(c1)C(=O)CC1(CCN(Cc3c[nH]c4ccccc34)CC1)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.